Economy award flights from Seattle (SEA) to Porto (OPO)
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In the last 30 days AwardTool saw economy award space on 10 programs for SEA→OPO. Lowest: 22,500 miles + $35.40 with American Airlines AAdvantage, which showed economy award space on 29 dates. Nonstop economy space was seen via Lufthansa Miles & More.
Prices observed – ; newest observation .
Page regenerated from the Oct 19, 2026 data snapshot (normally daily). Summary last changed . Seats change quickly.
- Lowest observed
- 22,500 miles + $35.40
- American Airlines AAdvantage
- Programs with space
- 10 of 10
- programs seen on this route
- Most dates seen
- 60 of 60
- dates checked · United MileagePlus
- Nonstop
- Seen
- from 3,642 miles + taxes vary
Compare programs for economy
The lowest one-way economy award each program showed on SEA→OPO, sorted by points.
| Program | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| Lufthansa Miles & MoreLowest observed | 3,642 pts + $326.10 | 1 stopNonstop from 3,642 pts | Eurowings Discover (4Y), Lufthansa (LH), Turkish Airlines (TK), United Airlines (UA) | 9+ | 39 | See dates | |
| GOL Smiles | 9,500 pts + taxes not reported | 1 stop | American Airlines (AA), Air Canada (AC), Air France (AF), Alaska Airlines (AS) +4 more | 2 | 21 | See dates | |
| American Airlines AAdvantage | 22,500 pts + $35.40 | 1 stop | American Airlines (AA), Alaska Airlines (AS), Royal Air Maroc (AT), British Airways (BA) | — | 29 | See dates | |
| Air France/KLM Flying Blue | 25,000 pts + $152.60 | 1 stop | Air France (AF), Delta Air Lines (DL), KLM (KL), Air Europa (UX) +1 more | 9+ | 46 | See dates | |
| Delta SkyMiles | 26,600 pts + $5.60 | 1 stop | Air France (AF), Delta Air Lines (DL), KLM (KL) | 9+ | 49 | See dates | |
| Avianca LifeMiles | 39,000 pts + $58.00 | 2 stops | Lufthansa (LH), United Airlines (UA) | 9+ | 9 | See dates | |
| United MileagePlus | 40,000 pts + $5.60 | 2 stops | Air Canada (AC), JetBlue (B6), Air Dolomiti (EN), Eurowings (EW) +8 more | 9+ | 60 | See dates | |
| Air Canada Aeroplan | 40,000 pts + $75.71 | 2 stops | Air Canada (AC), Eurowings (EW), Lufthansa (LH), SWISS (LX) +3 more | 9+ | 44 | See dates | |
| Qantas Frequent Flyer | 43,500 pts + $356.60 | 1 stop | American Airlines (AA), Air France (AF), Alaska Airlines (AS), British Airways (BA) | 1 | 15 | See dates | |
| Turkish Miles & Smiles | 55,000 pts + taxes not reported | 1 stop | Turkish Airlines (TK) | 1 | 45 | See dates |
Not seen means AwardTool hasn't observed this cabin on this route in the last 30 days. It doesn't mean the airline has no seats. Dates seen counts departure dates with an open award in that cabin at any price; newest observation is the latest time AwardTool saw one of them. Seats is the count the program reported when we observed it; some programs report at most 9.
Observed economy award examples
| Departure | Program | Points + taxes | Seats | Stops | Observed (UTC) | |
|---|---|---|---|---|---|---|
| Lufthansa Miles & More | 3,642 pts + $337.50 | 9+ | 1 stop | Check this date | ||
| American Airlines AAdvantage | 22,500 pts + $35.40 | — | 1 stop | Check this date | ||
| Air France/KLM Flying Blue | 25,000 pts + $154.40 | 9+ | 1 stop | Check this date | ||
| Delta SkyMiles | 38,200 pts + $5.60 | 9+ | 1 stop | Check this date | ||
| Avianca LifeMiles | 39,000 pts + $68.90 | 9+ | 1 stop | Check this date | ||
| Air Canada Aeroplan | 40,000 pts + $75.71 | 9+ | 2 stops | Check this date | ||
| United MileagePlus | 40,000 pts + $5.60 | 9+ | 2 stops | Check this date | ||
| Qantas Frequent Flyer | 43,500 pts + $356.60 | 1 | 1 stop | Check this date |
Prices are one-way per traveler: the program's points or miles plus taxes and carrier fees in USD, as AwardTool observed them in the observation window. Award space changes constantly. A seat we saw may be gone, and space we haven't seen may exist. Always confirm with a live search before transferring points; most transfers can't be reversed.
How often economy award space showed up
Departure dates in the next 365 days that AwardTool checked for each program in the last 30 days, how many had economy award space at any price, and the latest departure with space.
| Program | Dates with space | Share of dates checked | Latest departure with space |
|---|---|---|---|
| Lufthansa Miles & More | 39 of 40 | 97% | |
| GOL Smiles | 21 of 21 | 100% | |
| American Airlines AAdvantage | 29 of 62 | 46% | |
| Air France/KLM Flying Blue | 46 of 57 | 80% | |
| Delta SkyMiles | 49 of 57 | 85% | |
| Avianca LifeMiles | 9 of 56 | 16% | |
| United MileagePlus | 60 of 60 | 100% | |
| Air Canada Aeroplan | 44 of 58 | 75% | |
| Qantas Frequent Flyer | 15 of 60 | 25% | |
| Turkish Miles & Smiles | 45 of 52 | 86% |
Nonstop economy award space
- Lufthansa Miles & More: nonstop from 3,642 miles; nonstop space on 2 dates.
Best months for economy from Seattle (SEA) to Porto (OPO)
| Month | Lowest observed | Program | Dates |
|---|---|---|---|
| 6,615 pts + taxes vary | Lufthansa Miles & More | 3 | |
| 3,642 pts + taxes vary | Lufthansa Miles & More | 4 | |
| 87,300 pts + taxes vary | United MileagePlus | 3 | |
| 15,436 pts + taxes vary | Lufthansa Miles & More | 3 | |
| 6,615 pts + taxes vary | Lufthansa Miles & More | 6 | |
| 8,644 pts + taxes vary | Lufthansa Miles & More | 3 | |
| 8,644 pts + taxes vary | Lufthansa Miles & More | 6 | |
| 7,056 pts + taxes vary | Lufthansa Miles & More | 9 | |
| 44,000 pts + taxes vary | United MileagePlus | 2 | |
| 16,529 pts + taxes vary | Lufthansa Miles & More | 5 |
Lowest economy award by month and program
Each program's lowest one-way economy award by departure month, in its own points or miles; taxes vary. — means the program showed no economy space that month.
| Program | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lufthansa Miles & Moremiles | 6,615 | 3,642 | — | 15,436 | 6,615 | 8,644 | 8,644 | 7,056 | — | 16,529 |
| GOL Smilesmiles | 73,100 | 98,800 | 237,500 | — | — | 9,500 | — | — | 69,700 | — |
| American Airlines AAdvantagemiles | 30,000 | 22,500 | — | — | 22,500 | 22,500 | 30,000 | 30,000 | 59,000 | 58,000 |
| Air France/KLM Flying Bluemiles | 25,000 | 35,500 | 347,500 | — | 25,000 | 36,500 | 25,000 | 35,500 | 98,000 | 35,500 |
| Delta SkyMilesmiles | 54,400 | 38,200 | 113,300 | 36,100 | 31,500 | 36,000 | 26,600 | 29,700 | 47,500 | 37,800 |
| Avianca LifeMilesmiles | 39,000 | 39,000 | — | — | — | 39,000 | — | 39,000 | — | 39,000 |
| United MileagePlusmiles | 40,000 | 40,000 | 87,300 | 44,000 | 44,000 | 40,000 | 44,000 | 44,000 | 44,000 | 40,000 |
| Air Canada Aeroplanpoints | 40,000 | 40,000 | — | 60,000 | 40,000 | 40,000 | 60,000 | 60,000 | 60,000 | 49,057 |
| Qantas Frequent Flyerpoints | 43,500 | 43,500 | — | 50,800 | 50,800 | 50,800 | 43,500 | 43,500 | — | — |
| Turkish Miles & Smilesmiles | 55,000 | 55,000 | — | 55,000 | 55,000 | 55,000 | 55,000 | 55,000 | 75,000 | 55,000 |
Airlines seen in economy
Airlines that appeared on the award itineraries AwardTool observed, and the programs that showed them.
- Eurowings Discover (4Y): Lufthansa Miles & More
- American Airlines (AA): GOL Smiles, American Airlines AAdvantage and Qantas Frequent Flyer
- Air Canada (AC): GOL Smiles, United MileagePlus and Air Canada Aeroplan
- Air France (AF): GOL Smiles, Air France/KLM Flying Blue, Delta SkyMiles and Qantas Frequent Flyer
- Alaska Airlines (AS): GOL Smiles, American Airlines AAdvantage and Qantas Frequent Flyer
- Royal Air Maroc (AT): American Airlines AAdvantage
- JetBlue (B6): United MileagePlus
- British Airways (BA): GOL Smiles, American Airlines AAdvantage and Qantas Frequent Flyer
- Delta Air Lines (DL): Air France/KLM Flying Blue and Delta SkyMiles
- Air Dolomiti (EN): United MileagePlus
- Eurowings (EW): United MileagePlus and Air Canada Aeroplan
- IBERIA (IB): GOL Smiles
- KLM (KL): GOL Smiles, Air France/KLM Flying Blue and Delta SkyMiles
- Lufthansa (LH): Lufthansa Miles & More, Avianca LifeMiles, United MileagePlus and Air Canada Aeroplan
- SWISS (LX): United MileagePlus and Air Canada Aeroplan
- Austrian (OS): United MileagePlus
- Brussels Airlines (SN): United MileagePlus
- Turkish Airlines (TK): Lufthansa Miles & More, GOL Smiles, United MileagePlus, Air Canada Aeroplan and Turkish Miles & Smiles
- TAP Portugal (TP): United MileagePlus and Air Canada Aeroplan
- United Airlines (UA): Lufthansa Miles & More, Avianca LifeMiles, United MileagePlus and Air Canada Aeroplan
- Air Europa (UX): Air France/KLM Flying Blue
- Lufthansa City Airlines (VL): United MileagePlus
- Virgin Atlantic (VS): Air France/KLM Flying Blue
Economy on nearby routes
The lowest economy award AwardTool observed on related routes, as each route's page shows it: the return direction, other airports in the same cities, and more routes from Seattle (SEA) and to Porto (OPO). One way, in the program's points or miles; taxes are on each route's page.
| Route | Lowest observed | Program | Dates seen |
|---|---|---|---|
| Porto (OPO) to Seattle (SEA)Return direction | 15,000 points | Virgin Atlantic Flying Club | 18 |
| Seattle (SEA) to London Heathrow (LHR)Also from SEA | 9,500 milesNonstop | GOL Smiles | 277 |
| Seattle (SEA) to Paris Charles de Gaulle (CDG)Also from SEA | 9,500 miles | GOL Smiles | 330 |
| Seattle (SEA) to Amsterdam (AMS)Also from SEA | 15,000 points | Virgin Atlantic Flying Club | 30 |
| Seattle (SEA) to Bangkok Suvarnabhumi (BKK)Also from SEA | 27,000 miles | Cathay Pacific Asia Miles | 28 |
| Newark (EWR) to Porto (OPO)Also to OPO | 12,000 points | Virgin Atlantic Flying Club | 44 |
| London Heathrow (LHR) to Porto (OPO)Also to OPO | 5,990 miles | TAP Air Portugal Miles&Go | 311 |
| São Paulo Guarulhos (GRU) to Porto (OPO)Also to OPO | 17,000 points | Virgin Atlantic Flying Club | 15 |
Points that transfer to these programs
| Program | Amex | Bilt | Capital One | Chase | Citi | Wells Fargo |
|---|---|---|---|---|---|---|
| Air Canada Aeroplan | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | — | — |
| Air France/KLM Flying Blue | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant |
| American Airlines AAdvantage | — | — | — | — | 1:1 · Instant | — |
| Avianca LifeMiles | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | — | 1:1 · Instant | 1:1 · Instant |
| Delta SkyMiles | 1:1 · Instant | — | — | — | — | — |
| Qantas Frequent Flyer | 1:1 · Instant | — | 1:1 · ~1-2 days | — | 1:1 · Instant | — |
| Turkish Miles & Smiles | — | 1:1 · Instant | 1:1 · Instant | — | 1:1 · ~1 day | — |
| United MileagePlus | — | 1:1 · Instant | — | 1:1 · Instant | — | — |
Check current transfer bonuses. Most transfers can't be reversed. No bank transfers to GOL Smiles and Lufthansa Miles & More.
Questions about economy award flights from Seattle (SEA) to Porto (OPO)
What's the lowest economy award from Seattle (SEA) to Porto (OPO)?
22,500 miles + $35.40 with American Airlines AAdvantage. Seen Sep 25, 2026, 18:07 UTC for a Nov 3, 2026 departure. American Airlines AAdvantage showed economy award space on 29 departure dates at any price (newest observation Oct 18, 2026, 16:31 UTC). Search live before transferring points.
Which programs had economy award space from Seattle (SEA) to Porto (OPO)?
Lufthansa Miles & More (39 dates), GOL Smiles (21 dates), American Airlines AAdvantage (29 dates), Air France/KLM Flying Blue (46 dates), Delta SkyMiles (49 dates), Avianca LifeMiles (9 dates), United MileagePlus (60 dates), Air Canada Aeroplan (44 dates), Qantas Frequent Flyer (15 dates) and Turkish Miles & Smiles (45 dates), in the last 30 days.
Is there nonstop economy award space from Seattle (SEA) to Porto (OPO)?
Yes. AwardTool observed nonstop economy award space via Lufthansa Miles & More. The lowest nonstop award was 3,642 miles with Lufthansa Miles & More, which showed nonstop economy space on 2 dates.
Which months had the lowest economy award prices from Seattle (SEA) to Porto (OPO)?
Counting only month prices from programs with award space on 2 or more dates that month, and leaving out unusually low outliers, the lowest economy award AwardTool observed was for Jan 2027 departures: 15,436 miles with Miles & More (3 dates). The month table shows every lowest price, including those. Based on dates we observed, not a forecast.