Award flights from Seattle (SEA) to St Louis (STL)
In the last 30 days AwardTool saw award space on 4 programs for SEA→STL. Lowest economy: 10,000 points + $5.60 (Alaska Atmos Rewards). Lowest business: 43,600 points + $5.60 (Qantas Frequent Flyer). Lowest first: 25,000 miles + $5.60 (American Airlines AAdvantage).
Data as of
Award prices last changed . AwardTool checks these routes daily; seats change quickly.
SEA to STL at a glance
- From
- Seattle-Tacoma International, Seattle, United States (SEA)
- To
- St Louis Lambert International, St Louis, United States (STL)
- Programs with award space seen
- 4 of 4 programs tracked on this route
- Nonstop award space seen
- Yes, in economy, business and first, via American Airlines AAdvantage, Alaska Atmos Rewards and Qantas Frequent Flyer
- Airlines seen on these awards
- American Airlines (AA), Air Canada (AC), Alaska Airlines (AS), United Airlines (UA)
- Departures with open awards
- Oct 2026 to Sep 2027
- Observation window
- Awards observed in the last 30 days
- Destination guide
- Award flights to St Louis (STL)
Compare programs by cabin
The lowest one-way award each program showed in each cabin, sorted by points.
Economy
| Program | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| Alaska Atmos RewardsLowest observed | 10,000 pts + $5.60 | Nonstop | American Airlines (AA), Alaska Airlines (AS) | 9+ | 326 | See dates | |
| American Airlines AAdvantage | 12,500 pts + $5.60 | Nonstop | American Airlines (AA), Alaska Airlines (AS) | — | 330 | See dates | |
| Virgin Australia Velocity | 19,000 pts + $13.77 | 1 stop | Air Canada (AC), United Airlines (UA) | 9+ | 170 | See dates | |
| Qantas Frequent Flyer | 20,700 pts + $5.60 | 1 stopNonstop from 23,000 pts | American Airlines (AA), Alaska Airlines (AS) | 2 | 284 | See dates |
Business
| Program | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| Qantas Frequent Flyer | 43,600 pts + $5.60 | 1 stopNonstop from 46,000 pts | American Airlines (AA), Alaska Airlines (AS) | 2 | 293 | See dates |
Not seen in business: American Airlines AAdvantage, Alaska Atmos Rewards and Virgin Australia Velocity.
First
| Program | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| American Airlines AAdvantageLowest observed | 25,000 pts + $5.60 | Nonstop | American Airlines (AA), Alaska Airlines (AS) | 3 | 330 | See dates | |
| Alaska Atmos Rewards | 25,000 pts + $5.60 | Nonstop | American Airlines (AA), Alaska Airlines (AS) | 1 | 326 | See dates | |
| Virgin Australia Velocity | 51,500 pts + $13.77 | 1 stop | United Airlines (UA) | 1 | 2 | See dates |
Not seen in first: Qantas Frequent Flyer.
Premium Economy: not seen in the last 30 days.
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 award examples
| Departure | Cabin | Program | Points + taxes | Seats | Stops | Observed (UTC) | |
|---|---|---|---|---|---|---|---|
| Economy | Alaska Atmos Rewards | 10,000 pts + $5.60 | 9+ | Nonstop | Check this date | ||
| Business | Qantas Frequent Flyer | 43,600 pts + $5.60 | 2 | 1 stop | Check this date | ||
| First | American Airlines AAdvantage | 25,000 pts + $5.60 | 3 | Nonstop | Check this date | ||
| First | Virgin Australia Velocity | 51,500 pts + $13.77 | 2 | 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 at the time shown. 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.
Nonstop award space
- Economy: nonstop from 10,000 points via Alaska Atmos Rewards, which showed nonstop space on 326 dates (3 programs had nonstop space).
- Business: nonstop space via Qantas Frequent Flyer.
- First: nonstop from 25,000 points via Alaska Atmos Rewards, which showed nonstop space on 326 dates (2 programs had nonstop space).
Best months to fly SEA to STL on points
| Month | Economy | Business | First |
|---|---|---|---|
| 12,500 · AAdvantage (16 dates) | 43,600 · Qantas (16 dates) | 25,000 · AAdvantage (16 dates) | |
| 10,000 · Atmos (30 dates) | 43,600 · Qantas (28 dates) | 25,000 · AAdvantage (30 dates) | |
| 12,500 · AAdvantage (31 dates) | 43,600 · Qantas (27 dates) | 25,000 · AAdvantage (31 dates) | |
| 10,000 · Atmos (31 dates) | 43,600 · Qantas (30 dates) | 25,000 · AAdvantage (31 dates) | |
| 10,000 · Atmos (28 dates) | 43,600 · Qantas (27 dates) | 25,000 · AAdvantage (28 dates) | |
| 10,000 · Atmos (31 dates) | 43,600 · Qantas (23 dates) | 25,000 · AAdvantage (31 dates) | |
| 12,500 · AAdvantage (30 dates) | 43,600 · Qantas (22 dates) | 25,000 · AAdvantage (30 dates) | |
| 12,500 · AAdvantage (31 dates) | 43,600 · Qantas (29 dates) | 25,000 · AAdvantage (31 dates) | |
| 12,500 · AAdvantage (30 dates) | 43,600 · Qantas (27 dates) | 25,000 · AAdvantage (30 dates) | |
| 12,500 · AAdvantage (31 dates) | 43,600 · Qantas (28 dates) | 25,000 · AAdvantage (31 dates) | |
| 12,500 · AAdvantage (31 dates) | 43,600 · Qantas (30 dates) | 25,000 · AAdvantage (31 dates) | |
| 15,000 · Atmos (6 dates) | 43,600 · Qantas (6 dates) | 25,000 · AAdvantage (10 dates) |
Points that transfer to these programs
| Program | Amex | Bilt | Capital One | Chase | Citi | Wells Fargo |
|---|---|---|---|---|---|---|
| Alaska Atmos Rewards | — | 1:1 · ~1 day | — | — | — | — |
| American Airlines AAdvantage | — | — | — | — | 1:1 · Instant | — |
| Qantas Frequent Flyer | 1:1 · Instant | — | 1:1 · ~1-2 days | — | 1:1 · Instant | — |
Check current transfer bonuses. Most transfers can't be reversed. No bank transfers to Virgin Australia Velocity.
Search, calendar and alerts for SEA to STL
Route calendar
Every departure date with open award seats on SEA→STL for American Airlines AAdvantage and the other programs: a limited window on the free plan and 365 days with Pro.
Open the route calendarLive search
Search one date across programs to see current flights, seats and taxes before you transfer points.
Search SEA to STLQuestions about SEA to STL award flights
What's the lowest Seattle to St Louis award price AwardTool has seen?
In economy, 10,000 points + $5.60 with Alaska Atmos Rewards. Alaska Atmos Rewards showed economy award space on 326 departure dates (newest observation Oct 13, 2026, 06:59 UTC). In business, 43,600 points + $5.60 with Qantas Frequent Flyer. Qantas Frequent Flyer showed business award space on 293 departure dates (newest observation Oct 16, 2026, 03:40 UTC). Search live before transferring points.
Which loyalty programs had award space on SEA→STL?
4 programs in the last 30 days: American Airlines AAdvantage (economy 330 dates, first 330 dates); Alaska Atmos Rewards (economy 326 dates, first 326 dates); Qantas Frequent Flyer (economy 284 dates, business 293 dates); Virgin Australia Velocity (economy 170 dates, first 2 dates). Dates count departure dates with an open award.
Is there nonstop award space from SEA to STL?
Yes. AwardTool observed nonstop award space in economy, business and first, bookable via American Airlines AAdvantage, Alaska Atmos Rewards and Qantas Frequent Flyer. The lowest nonstop award in economy was 10,000 points with Alaska Atmos Rewards.
Which credit card points transfer to these programs?
American Express Membership Rewards: Qantas Frequent Flyer (1:1). Bilt Rewards: Alaska Atmos Rewards (1:1). Capital One Miles: Qantas Frequent Flyer (1:1). Citi ThankYou Points: American Airlines AAdvantage (1:1), Qantas Frequent Flyer (1:1). Ratios come from AwardTool's transfer partner list; check current bonuses first.
Which months had the lowest SEA→STL award prices?
Counting only month prices from programs with award space on 2 or more dates that month, and leaving out unusually low outliers: in economy, the lowest award was for Jan 2027 departures, 10,000 points with Atmos (31 dates); in business, the lowest award was for Jan 2027 departures, 43,600 points with Qantas (30 dates). The month table shows every lowest price, including those. Based on dates we observed, not a forecast.