United MileagePlus award flights from Seattle (SEA) to San José, Costa Rica (SJO)
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In the last 30 days AwardTool saw United MileagePlus award space for SEA→SJO in economy, business class and first class. Lowest economy: 20,000 miles + $24.68 (economy space on 29 dates). Lowest business class: 38,500 miles + $24.68 on a mixed-cabin itinerary (part of the trip in a lower cabin; business-class space on 29 dates).
Prices observed – ; newest observation .
Page regenerated from the Oct 19, 2026 data snapshot (normally daily). Summary last changed . Seats change quickly.
- Lowest economy
- 20,000 miles + $24.68
- economy space on 29 dates
- Lowest business class (mixed cabin)
- 38,500 miles + $24.68
- business-class space on 29 dates · part of the trip in a lower cabin
- Lowest first class
- 57,300 miles + $30.28
- first-class space on 29 dates
MileagePlus award prices by cabin
The lowest one-way United MileagePlus award AwardTool observed on SEA→SJO in each cabin, in miles plus taxes.
| Cabin | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| Economy | 20,000 miles + $24.68 | 1 stop | Air Canada (AC), Avianca (AV), COPA Airlines (CM), United Airlines (UA) | 4 | 29 | See dates | |
| Business | 38,500 miles + $24.68Mixed cabin | 2 stops | Avianca (AV), COPA Airlines (CM), United Airlines (UA) | 2 | 29 | See dates | |
| First | 57,300 miles + $30.28 | 2 stops | Avianca (AV), COPA Airlines (CM), United Airlines (UA) | 9+ | 29 | 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 MileagePlus award examples
| Departure | Cabin | Points + taxes | Seats | Stops | Observed (UTC) | |
|---|---|---|---|---|---|---|
| Economy | 20,000 miles + $24.68 | 4 | 1 stop | Check this date | ||
| Economy | 20,000 miles + $24.68 | 9+ | 1 stop | Check this date | ||
| Economy | 20,000 miles + $24.68 | 9+ | 1 stop | Check this date | ||
| Business | 57,300 miles + $30.28 | 8 | 2 stops | Check this date | ||
| Business | 72,600 miles + $30.28 | 8 | 2 stops | Check this date | ||
| First | 57,300 miles + $30.28 | 9+ | 2 stops | Check this date | ||
| First | 57,300 miles + $30.28 | 9+ | 2 stops | Check this date | ||
| First | 68,000 miles + $24.68 | 7 | 2 stops | 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 MileagePlus award space showed up
Departure dates in the next 365 days that AwardTool checked for United MileagePlus in the last 30 days, how many had award space in each cabin at any price, and the latest departure with space.
| Cabin | Dates with space | Share of dates checked | Latest departure with space |
|---|---|---|---|
| Economy | 29 of 29 | 100% | |
| Business | 29 of 29 | 100% | |
| First | 29 of 29 | 100% |
Best months to fly from Seattle (SEA) to San José, Costa Rica (SJO) with MileagePlus
| Month | Economy | Business | First |
|---|---|---|---|
| 20,000 (6 dates) | 57,300 (6 dates) | 57,300 (6 dates) | |
| 22,000 (12 dates) | 138,400 (12 dates) | 119,200 (12 dates) | |
| 20,000 (5 dates) | 38,500 (5 dates)Mixed cabin | 71,700 (5 dates) | |
| 22,000 (5 dates) | 94,300 (5 dates) | 87,900 (5 dates) | |
| 22,000 (1 date) | 38,500 (1 date)Mixed cabin | 57,300 (1 date) |
How to get MileagePlus miles
- Bilt Rewards: 1:1 · Instant
- Chase Ultimate Rewards: 1:1 · Instant
Check current transfer bonuses. Most transfers can't be reversed.
MileagePlus vs other programs from Seattle (SEA) to San José, Costa Rica (SJO)
Lowest one-way award per program and cabin on this route.
| Program | Economy | Premium Economy | Business | First |
|---|---|---|---|---|
| Aeromexico Club Premier | 34,000 pts + $117.78 | 75,000 pts + $119.13 | 53,000 pts + $115.96 | — |
| Air Canada Aeroplan | 22,348 pts + $103.39 | 33,852 pts + $108.49Lowest | 74,202 pts + $102.59 | — |
| Alaska Atmos Rewards | 25,000 pts + $44.68 | — | — | 70,000 pts + $24.68 |
| American Airlines AAdvantage | 17,500 pts + $24.68Lowest | — | 44,000 pts + $24.68 | 57,000 pts + $24.68Lowest |
| Delta SkyMiles | 22,100 pts + $24.68 | — | — | 136,600 pts + $24.68 |
| Qantas Frequent Flyer | 23,300 pts + $48.08 | — | — | — |
| United MileagePlus | 20,000 pts + $24.68 | — | 38,500 pts + $24.68LowestMixed cabin | 57,300 pts + $30.28 |
Questions about MileagePlus award flights from Seattle (SEA) to San José, Costa Rica (SJO)
How many miles do you need to fly from Seattle (SEA) to San José, Costa Rica (SJO) with United MileagePlus?
The lowest one-way United MileagePlus awards AwardTool observed in the last 30 days (newest observation Oct 19, 2026): economy 20,000 miles + $24.68, with monthly lows of 20,000 miles in 2 months and 22,000 miles in 3 months, and award space on 29 departure dates; business class 38,500 miles + $24.68, a mixed-cabin award, with a typical monthly low of 57,300 miles over 5 months and award space on 29 departure dates; first class 57,300 miles + $30.28, with a typical monthly low of 71,700 miles over 5 months and award space on 29 departure dates. Monthly lows varied in economy (20,000 to 22,000 miles), business class (38,500 to 138,400 miles) and first class (57,300 to 119,200 miles), so the award on your dates may cost more. Search live before transferring points.
What's the lowest MileagePlus award from Seattle (SEA) to San José, Costa Rica (SJO)?
In economy, 20,000 miles + $24.68. Seen Sep 21, 2026, 20:14 UTC for an Oct 26, 2026 departure. United MileagePlus showed economy award space on 29 departure dates at any price (newest observation Oct 19, 2026, 22:37 UTC). In business class, 38,500 miles + $24.68 on a mixed-cabin itinerary (part of the trip in a lower cabin). United MileagePlus showed business-class award space on 29 departure dates at any price (newest observation Oct 19, 2026, 22:37 UTC). Search live before transferring points.
Can you book nonstop awards from Seattle (SEA) to San José, Costa Rica (SJO) with MileagePlus?
AwardTool hasn't observed nonstop United MileagePlus award space on this route in the last 30 days. That doesn't mean nonstop space never appears.
Which credit card points can book MileagePlus awards from Seattle (SEA) to San José, Costa Rica (SJO)?
Bilt Rewards (1:1, Instant) and Chase Ultimate Rewards (1:1, Instant). Check current transfer bonuses; most transfers can't be reversed.
Which months had the lowest MileagePlus award prices from Seattle (SEA) to San José, Costa Rica (SJO)?
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 Oct 2026 departures: 20,000 miles (6 dates). The month table shows every lowest price, including those. Based on dates we observed, not a forecast.