Flights Austin → Seattle
As of October 2026, economy flights from Austin to Seattle have a typical range USD 262–560, median USD 264. Full range across all 252 offers: USD 234–1100. We analyzed 252 offers from 8 airlines in a single price check.
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Austin → Seattle
Based on 252 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Austin → Seattle
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Delta | Included | USD 35 | — |
| Frontier Airlines | — | — | — |
| Alaska Airlines | Included | USD 35 | — |
| Southwest | Included | Included | — |
| American Airlines | Included | USD 35 | — |
| United | Included | USD 35 | — |
| American | — | USD 110 | — |
| Alaska | — | USD 90 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Austin to Seattle cost?
Based on 252 offers · October 2026
Austin to Seattle flights ranged from USD 234 to USD 1100 across 252 offers analyzed in October 2026. The chart below shows how prices distributed across all 252 offers.
These 252 offers (October 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 264 and USD 360
What hidden fees do Austin to Seattle flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Austin to Seattle routes. The breakdown below is based on 252 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| DL | 31 | 6% |
| F9 | 10 | 3% |
| AS | 30 | 7% |
| WN | 12 | 3% |
| AA | 45 | 16% |
| UA | 45 | 16% |
| American | 110 | 42% |
| Alaska | 90 | 29% |
American: base ~USD 153 + fees USD 110 = ~USD 263 total. Frontier Airlines: base ~USD 272 + fees USD 10 = ~USD 282 total.
American's USD 110 ancillary fees narrow the gap with Frontier Airlines's lower-fee model — the USD 119 base difference shrinks to USD 19 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Austin to Seattle?
8 airlines flew Austin to Seattle in this dataset. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 American | 1 | — | 263 | 110 (42%) |
 American Airlines | 68 | 262–328 | 264 | 45 (17%) |
 United Airlines | 70 | 262–297 | 264 | 45 (17%) |
 Frontier Airlines | 16 | 240–440 | 282 | 10 (4%) |
 Alaska | 2 | — | 310 | 90 (29%) |
 Southwest Airlines | 39 | 254–552 | 330 | 12 (4%) |
 Alaska Airlines | 25 | 254–629 | 437 | 30 (7%) |
 Delta Air Lines | 31 | 300–620 | 450 | 31 (7%) |
Where do the best Austin → Seattle prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Austin to Seattle flights
- Full-service carriers on Austin–Seattle cost 1.1x more than budget airlines (USD 331 vs USD 306 median; overall median USD 264).
- American charges 11.0x more in ancillary fees than F9 — USD 110 vs USD 10 avg per booking.
- The same route priced USD 641 apart depending on where it was booked — the lowest median was USD 264. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Austin to Seattle cost?
- Based on 252 offers analyzed, Austin to Seattle flights range from USD 234 to USD 1100, with a median price of USD 264. Search for your specific dates →
- What hidden fees should I expect on Austin to Seattle flights?
- On average, ancillary fees (bags, seat selection) add USD 35 to the base fare on Austin to Seattle flights. See itemized fees for your itinerary →
- Which airline is cheapest on Austin to Seattle including all fees?
- American has the lowest median fare on Austin to Seattle at USD 263 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Austin–Seattle flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 264. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Austin to Seattle routes?
- Austin to Seattle has 8 airlines competing, creating a price range from USD 234 to USD 1100 across 252 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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