Seattle to Saint Louis (STL): October 2026 flight deals
Compare trip dates and fares.
Round-trip fare examples
Observed September 16, 2026 (UTC). Search a trip for current prices and flight details.
Round-trip totals in USD for 1 adult · Economy.
| Destination | Trip dates | Days | Axel Member | Airline fare | Stops | Search |
|---|---|---|---|---|---|---|
| Saint Louis (STL) | Oct 1–23, 2026 | 22 | $298 | $331 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 2–4, 2026 | 2 | $357 | $398 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 2–5, 2026 | 3 | $288 | $320 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 16–18, 2026 | 2 | $228 | $253 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 16–19, 2026 | 3 | $203 | $227 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 22–25, 2026 | 3 | $203 | $227 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 23–25, 2026 | 2 | $203 | $227 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 23–26, 2026 | 3 | $203 | $227 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 29–Nov 1, 2026 | 3 | $203 | $227 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 30–Nov 1, 2026 | 2 | $203 | $227 | 1 stop | Search for 1 adult · Dates · Travelers |
| Saint Louis (STL) | Oct 30–Nov 2, 2026 | 3 | $203 | $227 | 1 stop | Search for 1 adult · Dates · Travelers |
Compare trip dates
Observed September 17, 2026 (UTC). Check current prices.
USD for the listed travelers.
1 adult · Complete round-trip totals · 22+ days
Complete round-trip totals; both flights included.
22 days between departure and return.
| Trip / travelers | Dates | Flights | Axel Member | Airline fare | Next step |
|---|---|---|---|---|---|
| SEA–STL · 1 adult | Oct 1–23, 2026 | Out: Frontier Airlines · 1 stop (LAS) · 11h 32m; Return: Frontier Airlines · 1 stop (DEN) · 21h 12m | $307 | $341 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
1 adult · Complete round-trip totals · 2–4 days
3 days between departure and return.
| Trip / travelers | Dates | Flights | Axel Member | Airline fare | Next step |
|---|---|---|---|---|---|
| SEA–STL · 1 adult | Oct 2–5, 2026 | Out: Frontier Airlines · 1 stop (LAS) · 11h 47m; Return: Frontier Airlines · 1 stop (DEN) · 20h 58m | $278 | $310 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 2–5, 2026 | Out: Frontier Airlines · 1 stop (LAS) · 11h 47m; Return: Frontier Airlines · 1 stop (LAS) · 8h 11m | $312 | $350 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 16–19, 2026 | Out: United Airlines · 1 stop (DEN) · 5h 49m; Return: United Airlines · 1 stop (IAH) · 9h 33m | $258 | $287 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 16–19, 2026 | Out: United Airlines · 1 stop (DEN) · 5h 49m; Return: United Airlines · 1 stop (DEN) · 6h 1m | $577 | $648 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 22–25, 2026 | Out: American Airlines · 1 stop (ORD) · 7h 5m; Return: American Airlines · 1 stop (DFW) · 7h 34m | $203 | $227 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 22–25, 2026 | Out: American Airlines · 1 stop (ORD) · 7h 5m; Return: Alaska Airlines · Nonstop · 4h 28m | $576 | $647 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 23–26, 2026 | Out: Southwest Airlines · 1 stop (DEN) · 5h 35m; Return: Southwest Airlines · 1 stop (MDW) · 8h 30m | $203 | $227 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 23–26, 2026 | Out: Southwest Airlines · 1 stop (DEN) · 5h 35m; Return: Southwest Airlines · 1 stop (DEN) · 6h 25m | $341 | $382 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 29–Nov 1, 2026 | Out: United Airlines · 1 stop (ORD) · 6h 43m; Return: United Airlines · 1 stop (SFO) · 8h 39m | $203 | $227 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 29–Nov 1, 2026 | Out: United Airlines · 1 stop (ORD) · 6h 43m; Return: United Airlines · 1 stop (DEN) · 6h 17m | $508 | $571 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 30–Nov 2, 2026 | Out: Southwest Airlines · 1 stop (DEN) · 5h 35m; Return: Southwest Airlines · 1 stop (MDW) · 7h 25m | $203 | $227 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
1 adult · Round-trip starting totals · 22+ days
Starting totals are for the round trip. Choose a return flight to confirm the final total.
22 days between departure and return.
| Trip / travelers | Dates | Flights | Axel Member | Airline fare | Next step |
|---|---|---|---|---|---|
| SEA–STL · 1 adult | Oct 1–23, 2026 | Out: Frontier Airlines · 1 stop (LAS) · 11h 32m | Round-trip starting total: $287 | Round-trip starting total: $319 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 1–23, 2026 | Out: Alaska Airlines · Nonstop · 3h 56m | Round-trip starting total: $467 | Round-trip starting total: $522 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
1 adult · Round-trip starting totals · 2–4 days
3 days between departure and return.
| Trip / travelers | Dates | Flights | Axel Member | Airline fare | Next step |
|---|---|---|---|---|---|
| SEA–STL · 1 adult | Oct 22–25, 2026 | Out: Alaska Airlines · Nonstop · 3h 56m | Round-trip starting total: $327 | Round-trip starting total: $363 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 23–26, 2026 | Out: Alaska Airlines · Nonstop · 3h 56m | Round-trip starting total: $347 | Round-trip starting total: $385 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 29–Nov 1, 2026 | Out: Alaska Airlines · Nonstop · 3h 56m | Round-trip starting total: $347 | Round-trip starting total: $385 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Oct 30–Nov 2, 2026 | Out: Alaska Airlines · Nonstop · 3h 56m | Round-trip starting total: $347 | Round-trip starting total: $385 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
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