Flights Los Angeles → Seattle
As of October 2026, economy flights from Los Angeles to Seattle have a typical range USD 247–427, median USD 262. Full range across all 204 offers: USD 181–512. We found 63% of 204 offers from budget carriers (around USD 252) and 37% from full-service carriers (around USD 262).
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: Los Angeles → Seattle
Based on 204 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Los Angeles → Seattle
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Southwest | — | USD 90 | — |
| Frontier Airlines | — | — | — |
| Alaska | — | USD 90 | — |
| Delta | Included | USD 35 | — |
| United | Included | USD 35 | — |
| American Airlines | Included | USD 35 | — |
| Alaska Airlines | Included | USD 35 | — |
| Southwest Airlines | Included | Included | — |
| Delta | — | 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 Los Angeles to Seattle cost?
Based on 204 offers · October 2026
Los Angeles to Seattle flights ranged from USD 181 to USD 512 across 204 offers analyzed in October 2026. Two fare clusters detected: budget fares around 264 and premium fares around 429 The chart below shows how prices distributed across all 204 offers.
These 204 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 247 and USD 271
What hidden fees do Los Angeles to Seattle flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Los Angeles to Seattle routes. The breakdown below is based on 204 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| Southwest | 90 | 42% |
| F9 | 10 | 4% |
| Alaska | 90 | 35% |
| DL | 34 | 11% |
| UA | 45 | 17% |
| AA | 45 | 17% |
| AS | 38 | 12% |
| WN | 0 | 0% |
| Delta | 90 | 34% |
Southwest: base ~USD 97 + fees USD 90 = ~USD 187 total. Frontier Airlines: base ~USD 224 + fees USD 10 = ~USD 234 total.
Southwest's USD 90 ancillary fees narrow the gap with Frontier Airlines's lower-fee model — the USD 127 base difference shrinks to USD 47 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 Los Angeles to Seattle?
10 airlines flew Los Angeles to Seattle in this dataset. The route shows a clear split between low-cost and full-service carriers. 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.
Even on the cheapest airline (Southwest), fares ranged USD 182–252 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Southwest | 7 | 182–252 | 187 | 90 (48%) |
 Frontier | 10 | 181–240 | 208 | n/a |
 Frontier Airlines | 3 | 194–304 | 234 | 10 (4%) |
 Delta Air Lines | 43 | 247–427 | 247 | 34 (14%) |
 Alaska Airlines | 65 | 252–512 | 252 | 38 (15%) |
 American Airlines | 14 | 247–275 | 262 | 45 (17%) |
 Southwest Airlines | 27 | 266–272 | 266 | 0 (0%) |
 United Airlines | 5 | 247–269 | 266 | 45 (17%) |
 Alaska | 29 | 246–271 | 267 | 90 (34%) |
 Delta | 1 | — | 267 | 90 (34%) |
Where do the best Los Angeles → Seattle prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from travel agency 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: Los Angeles to Seattle flights
- Full-service carriers on Los Angeles–Seattle cost 1.2x more than budget airlines (USD 260 vs USD 224 median; overall median USD 262).
- Southwest charges 9.0x more in ancillary fees than F9 — USD 90 vs USD 10 avg per booking.
- The same route priced USD 265 apart depending on where it was booked — the lowest median was USD 247. 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 Los Angeles to Seattle cost?
- Based on 204 offers analyzed, Los Angeles to Seattle flights range from USD 181 to USD 512, with a median price of USD 262. Search for your specific dates →
- What hidden fees should I expect on Los Angeles to Seattle flights?
- On average, ancillary fees (bags, seat selection) add USD 42 to the base fare on Los Angeles to Seattle flights. See itemized fees for your itinerary →
- Which airline is cheapest on Los Angeles to Seattle including all fees?
- Southwest has the lowest median fare on Los Angeles to Seattle at USD 187 (median across 7 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Los Angeles–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 247. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Los Angeles to Seattle routes?
- Los Angeles to Seattle has 10 airlines competing, creating a price range from USD 181 to USD 512 across 204 offers. There are two distinct fare clusters on this route: budget options and premium fares. Find where your trip lands in the distribution →
10 airlines, two price clusters — find which fits your budget
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