THE QUICK ANSWER
At a glance
- A useful starting point is a flexible-date search for Delta flights you would otherwise buy, followed by comparison with eligible partner options.
- Compare TAP flights to Portugal and available Star Alliance or other partner awards through the correct booking channel.
- An empty direct route is not a promise that a hotel conversion, another airline or a promotional offer will bridge the gap. Check the complete chain, eligibility, fees and loss of flexibility. There is no general ability to exchange unrelated airline currencies or combine them at one checkout.
- Save the ticket issuer, operating airlines, fare or award product, cash total and cancellation deadline with your quote. Refundable miles do not necessarily become bank points again, and returned miles may retain their original expiry date. Paying a change fee does not guarantee replacement award seats.
Start with what each program is designed to do, then test the same journey in both booking systems. An airline logo describes who may operate a flight; the loyalty program names the account and rules used to issue the award.
| What to compare | Delta SkyMiles | TAP Miles&Go |
|---|---|---|
| Rewards currency | SkyMiles | TAP Miles&Go Bonus Miles |
| Associated airline | Delta Air Lines | TAP Air Portugal |
| Alliance or partner framework | SkyTeam | Star Alliance and other airline partners |
| When to consider it | A useful starting point is a flexible-date search for Delta flights you would otherwise buy, followed by comparison with eligible partner options. | Compare TAP flights to Portugal and available Star Alliance or other partner awards through the correct booking channel. |
| Important limitation | The fare experience affects earning and flexibility. Compare the exact product instead of treating every economy ticket or every miles-based payment option as equivalent. | The paid-ticket TAP Stopover offer does not automatically apply to an award; routing and servicing conditions depend on the award category. |
Begin with the program whose available flights and funding route fit your actual trip. A strong starting point is an account you can use today, rather than a low mileage figure from a different date, cabin or passenger count. Compare the alternative before making an irreversible transfer.
If you already hold enough rewards in one account, using them may preserve flexible bank points for a later trip. That does not make a poor routing or a restrictive ticket attractive: compare the complete journey, acceptable cash fare and cancellation rules before deciding.
- Delta SkyMiles: Travelers with SkyMiles who want to compare real award prices and understand Delta's fare restrictions.
- TAP Miles&Go: Travelers planning TAP flights via Portugal or comparing eligible Star Alliance and other partner awards.

The programs have different alliance or partnership frameworks. First compare complete journeys that reach your destination at acceptable times. If you want to compare the same operating flight, check each program’s official partner list independently. Different alliances do not prove either the presence or the absence of a shared bilateral airline partner.
Keep nonstop and connecting options in separate rows. Include airport changes, overnight stops, baggage collection, entry requirements and separately ticketed positioning flights. A missed connection on separate tickets can require a new paid ticket or award, so a lower points total is only one part of the comparison.
Read the following program-specific rules before comparing a headline mileage amount. Own-airline awards, partner awards, cash-and-points products, upgrades and waitlists can be different purchases even when their results appear on the same screen.
Delta's award calendar lets you compare nearby dates using the current quotes. Search the complete trip for the intended cabin and passenger count, because those choices can change the available offer. Use the displayed award price rather than assuming an old regional mileage example will apply.
Delta also distinguishes the cabin from the fare experience. A lower-priced Basic experience can have different restrictions from another ticket in the same cabin. Delta's current experience comparison page includes award cancellation information. Read that product comparison and the fare rules in your booking before assuming the lowest miles quote includes the flexibility or seat choices you need.
TAP instructs members to sign in at flyTAP and select Pay with miles for TAP and Star Alliance searches. For other partner airlines, its redemption page directs travelers to TAP Miles&Go Customer Service. A missing online result is therefore worth diagnosing by category before assuming the program does not support the airline.
Read stopover rules for the award category you choose. TAP’s own-airline award conditions say those tickets are not eligible for the standard TAP Stopover program. Its partner-award conditions contain a separate stopover provision for eligible return journeys. A promotion aimed at paid tickets should not be used as an award-routing rule.
The partner conditions also address mixed cabins and segment limits. A premium cabin on one segment can affect the mileage charged for the trip. If your goal is a long-haul Business Class seat, verify that the long-haul leg is actually in Business before accepting a connection with a premium label.
The table uses AwardTool’s tracked U.S. bank-transfer directory, reviewed November 6, 2026. It covers the six listed bank currencies, not every funding option worldwide. A direct transfer relationship is separate from an airline partnership, and your particular card must permit the transfer. Estimated posting times do not reserve seats.
There is no shared direct bank source for this pair in the six-currency directory. Compare the balances and eligible cards you actually hold. A program without a listed route may still have other earning options, but those must be confirmed separately before planning to fund a time-sensitive booking.
An empty direct route is not a promise that a hotel conversion, another airline or a promotional offer will bridge the gap. Check the complete chain, eligibility, fees and loss of flexibility. There is no general ability to exchange unrelated airline currencies or combine them at one checkout.
| Bank currency | Delta SkyMiles | TAP Miles&Go |
|---|---|---|
| American Express Membership Rewards | 1:1 · Instant | No direct transfer in the tracked directory |
| Bilt Rewards | No direct transfer in the tracked directory | 1:1 · Instant |
| Capital One Miles | No direct transfer in the tracked directory | 1:1 · Instant |
| Chase Ultimate Rewards | No direct transfer in the tracked directory | No direct transfer in the tracked directory |
| Citi ThankYou Points | No direct transfer in the tracked directory | No direct transfer in the tracked directory |
| Wells Fargo Rewards | No direct transfer in the tracked directory | No direct transfer in the tracked directory |
These are hypothetical quotes, not live prices, published award-chart amounts or guaranteed availability. Assume the same travelers, cabin and acceptable journey, with confirmed seats. If the flights or confirmation status differ, record those differences before doing the arithmetic.
The first quote uses 10,000 fewer reward units but costs US$150 more. That is US$0.015 of extra cash per unit conserved; it is a break-even comparison, not a valuation of either program. With unrelated currencies, also calculate the source bank points needed and the alternatives for each balance. A waitlisted or unconfirmed quote belongs in a separate plan.
For four travelers, these example totals become 240,000 reward units plus US$1,200 and 280,000 reward units plus US$600. Re-run the search for all four travelers: multiplying a one-seat result does not establish that four seats exist at that price. If some seats cost more or require separate reservations, build a new total.
| What to compare | Hypothetical quote | Cash component |
|---|---|---|
| Delta SkyMiles | 60,000 SkyMiles | US$300 |
| TAP Miles&Go | 70,000 TAP Miles&Go Bonus Miles | US$150 |
Compare the complete checkout amount in one currency. Taxes, carrier charges, partner-ticket fees, phone fees and optional extras can affect the result. Then read the change and cancellation conditions attached to the exact award product, including the deadline, fee, refund currency and assistance required after travel begins.
Save the ticket issuer, operating airlines, fare or award product, cash total and cancellation deadline with your quote. Refundable miles do not necessarily become bank points again, and returned miles may retain their original expiry date. Paying a change fee does not guarantee replacement award seats.
Delta's official points-conversion page lists American Express Membership Rewards as a transfer route and directs travelers to the relevant country terms. For a U.S. account, use the U.S. issuer's transfer page and review any fee, minimum and processing estimate. A hotel-points conversion is another separate transaction; its rate should not be assumed equivalent to a bank transfer.
Delta's current travel-with-miles page describes no redeposit or change fee for eligible awards originating in the United States and Canada, while excluding Basic experiences. Other origins and restricted fares require their own check. A fee waiver also does not guarantee that a replacement flight costs the same miles. Save the selected conditions and act before the applicable departure deadline if plans change.
TAP’s current redemption page describes special award pricing for eligible Gold and Navigator members on TAP-operated flights, subject to detailed conditions. If status pricing matters to your plan, search while signed in and check eligibility rather than applying a screenshot from another account to your booking.
A partner chart can be useful for planning, but use the current official chart link and the final issued itinerary when comparing programs. Ask what happens if you change dates or cancel before departure. Include any mileage difference, administration charge and rule affecting the original route in your assessment of a flexible trip.
A balance with no immediate trip needs its own plan. Activity-based expiry, fixed validity, temporary suspensions, paid extensions and status exemptions are different rules. Check the date shown in the actual account, including what happens after an award is canceled.
Pooling rewards, transferring between members and booking an award for another person are separate permissions. Check nominee eligibility, relationship rules, waiting periods, account control and the conditions for children or infants. A household arrangement in one program does not carry over to the other.
| What to compare | Delta SkyMiles | TAP Miles&Go |
|---|---|---|
| Reward validity | SkyMiles do not expire under Delta’s mileage-expiration policy. Account suspension and program-rule violations remain separate issues. | Miles normally last three years from the relevant activity. Certain promotional or compensation miles last only one year. Miles Store extensions, club conditions and qualifying status benefits can change validity; track the individual expiry dates instead of assuming that a small new earning extends the entire balance. |
Delta allows you to issue an award for another person even when you are not traveling. That is often simpler than moving miles into that person's account. Its published member-to-member transfer price is one US cent per mile plus $30 per transaction, before applicable taxes. Moving 20,000 miles would therefore cost $230 before tax under that schedule; issuing an eligible award directly avoids needing that transfer transaction.
TakeOff 15 is a separate benefit for eligible Delta SkyMiles American Express Gold, Platinum and Reserve card products, including their eligible business versions. It reduces the mileage price of eligible Delta flight awards booked through Delta by 15%; partner-operated flights and cash taxes or fees are excluded. Sign in to the linked account and verify the benefit in checkout rather than applying the discount to every result yourself.
The program terms permit award tickets in another person's name with the account holder's authorization. Before funding a relative's trip, check the beneficiary conditions and the minimum issuance time for the chosen airline category. The traveler and the account owner are different people in that situation; have both identities ready for the booking and keep the issuing account's access details current for later servicing.
Do not confuse buying or transferring miles with buying a ticket for another traveler. Moving a balance is a separate transaction with separate conditions, while issuing an authorized award can spend miles already held in one account. Establish which action is needed, whether the recipient is eligible and who will pay the cash charges. A last-minute family trip can fail on an issuance requirement even when there are sufficient miles.
Choose where to redeem existing rewards separately from where to credit a future paid flight. A flight normally credits to one eligible frequent-flyer account. Redeemable points, tier credits and qualifying spending can use different calculations, and a transfer of redeemable points is not generally proof of elite qualification.
| What to compare | Delta SkyMiles | TAP Miles&Go |
|---|---|---|
| Status qualification context | Medallion Qualification Dollars, or MQDs, track progress toward Silver, Gold, Platinum and Diamond status. They are separate from spendable SkyMiles. Qualifying travel and eligible card benefits can earn MQDs; transferring a bank-points balance into SkyMiles does not by itself confer Medallion status. | Silver, Gold and Navigator use Status Miles or qualifying TAP flights under the tier rules, separately from the Bonus Miles spent on tickets. TAP's qualification year is linked to joining the program. Navigator has an additional requirement for flights on specified fares, so a high redeemable balance alone does not qualify. |

Work from a trip you would be happy to take. Keep a dated comparison record and an acceptable fallback until your award is issued, so a good search result can become a usable ticket.
Record the complete trip
Write down your origin options, destination, acceptable dates, full passenger count and cabin. Record every flight’s operating airline, airport, connection, local departure time and segment cabin. Keep a cash-fare benchmark with comparable baggage and flexibility.
Confirm in both issuing programs
Reproduce the exact flights in Delta SkyMiles and TAP Miles&Go where each program can book them. Separate confirmed seats from waitlists, and separate a complete itinerary from independently available legs. If only one account can confirm your trip, compare that result with other available journeys rather than with an unavailable price.
Calculate the funding before transferring
Record the receiving-account balance, shortfall, eligible bank account, ratio, promotion, transfer minimum and increment. Include cash charges separately. Confirm account details and transfer conditions before submitting; a transfer confirmation is not a seat hold or an issued ticket.
Verify the ticket and later servicing
Complete checkout and retrieve the ticket number and operating-airline booking reference. Check passenger names, dates, airports, baggage and cabin on every leg. Save the ticket conditions and the issuing program’s contact route for changes, refunds or disruption.

Common questions
Is Delta SkyMiles always better than TAP Miles&Go?
No. The useful choice depends on currently confirmed seats, the complete itinerary, your funding route and the ticket conditions. Compare the same travel need instead of applying a universal winner or an old mileage example to every route.
Can I move rewards directly between these programs?
Do not assume a direct exchange. An airline partnership does not itself let members move balances between loyalty accounts. Check an explicitly supported transfer or account-linking facility, if one exists, and verify all identity, eligibility and timing conditions.
Why does one program show seats that the other does not?
Airlines can make different inventory available to their own members and to different partners. Search method, passenger count, cabin and routing rules also matter. Confirm the exact itinerary with the program issuing the ticket; an alliance logo or another search result is not proof of bookable seats.
Should I choose the quote with fewer miles or points?
Compare cash, bank points required, usable existing balances, travel time and cancellation terms as well. Reward units in unrelated programs are not a single interchangeable currency. An attractive quote that cannot be funded or confirmed does not solve the booking need.
Can a family use the same price shown for one passenger?
Only if the issuing program confirms the full party at that total. Search with the actual traveler count, check every segment’s cabin and inspect the rules for children, infants, nominees and household balances. Separate reservations introduce their own servicing and disruption considerations.
Does canceling an award restore the original bank points?
An airline’s refund generally follows the award ticket’s conditions; it does not establish a reverse transfer to the bank. Verify where rewards are redeposited, their validity, refundable cash components and any fee before moving points or canceling.
Are the examples in this guide current award offers?
No. The worked quotes illustrate the comparison method. Program rules and the tracked funding directory have their own review dates; current award prices, seats and the terms shown at checkout still need to be confirmed before booking.
Sources and further reading
Sources reviewed
Sources & further reading
- Delta: Travel with Miles booking and servicing
- Delta: current travel experiences
- Delta: convert partner points to SkyMiles
- Delta: earning miles
- Delta: Medallion overview
- Delta: SkyMiles program rules
- Delta: TakeOff 15 eligibility and exclusions
- Delta: booking for others and mileage-transfer charges
- TAP: book trips with miles and partner conditions
- TAP: Miles&Go redemption options
- TAP: program terms and beneficiary conditions
- Capital One: current transfer partners
- Marriott: current airline-transfer partners
- TAP: Miles&Go earning, status and mileage validity terms
Before you book
Award availability and prices can change. Confirm the exact itinerary, cabin, traveler count, points, and cash total with the loyalty program before transferring points or booking. Search access and limits depend on your plan.
See current plans