Flights Seattle → Houston
As of October 2026, economy flights from Seattle to Houston have a typical range USD 234–1150, median USD 356. Full range across all 169 offers: USD 120–3889. We analyzed 169 offers from 11 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: Seattle → Houston
Based on 169 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Seattle → Houston
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Frontier | — | — | — |
| Alaska Airlines | — | USD 35 | — |
| Southwest Airlines | Included | Included | — |
| Southwest | — | USD 45 | — |
| American Airlines | — | USD 35 | — |
| Alaska | — | USD 45 | — |
| United | — | USD 50 | — |
| United Airlines | — | USD 35 | — |
| American | — | USD 55 | — |
| Delta | Included | USD 45 | — |
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 Seattle to Houston cost?
Based on 169 offers · October 2026
Seattle to Houston flights ranged from USD 120 to USD 3889 across 169 offers analyzed in October 2026. The chart below shows how prices distributed across all 169 offers.
These 169 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 269 and USD 554
What hidden fees do Seattle to Houston flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Seattle to Houston routes. The breakdown below is based on 169 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| F9 | 10 | 6% |
| AS | 35 | 9% |
| WN | 0 | 0% |
| Southwest | 45 | 19% |
| AA | 52 | 14% |
| Alaska | 45 | 20% |
| United | 50 | 19% |
| UA | 47 | 7% |
| American | 55 | 20% |
| DL | 41 | 4% |
American: base ~USD 217 + fees USD 55 = ~USD 272 total. Alaska Airlines: base ~USD 314 + fees USD 35 = ~USD 349 total.
American's USD 55 ancillary fees narrow the gap with Alaska Airlines's lower-fee model — the USD 97 base difference shrinks to USD 77 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 Seattle to Houston?
11 airlines flew Seattle to Houston 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) |
|---|---|---|---|---|
 Frontier | 1 | — | 120 | n/a |
 Frontier Airlines | 2 | 144–188 | 166 | 10 (6%) |
 Alaska | 4 | 224–234 | 234 | 45 (19%) |
 Southwest | 18 | 204–260 | 254 | 45 (18%) |
 American | 1 | — | 272 | 55 (20%) |
 United | 6 | 241–273 | 273 | 50 (18%) |
 Southwest Airlines | 37 | 248–460 | 344 | 0 (0%) |
 Alaska Airlines | 7 | 220–529 | 349 | 35 (10%) |
 American Airlines | 32 | 269–489 | 357 | 52 (15%) |
 United Airlines | 27 | 278–1193 | 554 | 47 (8%) |
 Delta Air Lines | 34 | 410–1674 | 1102 | 41 (4%) |
Where do the best Seattle → Houston 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: Seattle to Houston flights
- Full-service carriers on Seattle–Houston cost 2.0x more than budget airlines (USD 449 vs USD 221 median; overall median USD 356).
- American charges 5.5x more in ancillary fees than F9 — USD 55 vs USD 10 avg per booking.
- The same route priced USD 305 apart depending on where it was booked — the lowest median was USD 250. 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 Seattle to Houston cost?
- Based on 169 offers analyzed, Seattle to Houston flights range from USD 120 to USD 3889, with a median price of USD 356. Search for your specific dates →
- What hidden fees should I expect on Seattle to Houston flights?
- On average, ancillary fees (bags, seat selection) add USD 35 to the base fare on Seattle to Houston flights. See itemized fees for your itinerary →
- Which airline is cheapest on Seattle to Houston including all fees?
- Frontier has the lowest median fare on Seattle to Houston at USD 120 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Seattle–Houston 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 250. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Seattle to Houston routes?
- Seattle to Houston has 11 airlines competing, creating a price range from USD 120 to USD 3889 across 169 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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