Flights St Louis → Houston
As of October 2026, economy flights from St Louis to Houston have a typical range USD 459–709, median USD 499. Full range across all 256 offers: USD 325–822. We found 14% of 256 offers from budget carriers (around USD 459) and 86% from full-service carriers (around USD 499).
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: St Louis → Houston
Based on 256 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: St Louis → Houston
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Frontier | — | — | — |
| United Airlines | Included | USD 35 | — |
| Southwest Airlines | — | USD 90 | — |
| Delta | Included | USD 35 | — |
| American Airlines | Included | USD 35 | — |
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 St Louis to Houston cost?
Based on 256 offers · October 2026
St Louis to Houston flights ranged from USD 325 to USD 822 across 256 offers analyzed in October 2026. Two fare clusters detected: budget fares around 499 and premium fares around 698 The chart below shows how prices distributed across all 256 offers.
These 256 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 499 and USD 508
What hidden fees do St Louis to Houston flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on St Louis to Houston routes. The breakdown below is based on 256 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| F9 | 10 | 2% |
| UA | 77 | 17% |
| WN | 15 | 3% |
| DL | 45 | 7% |
| AA | 45 | 7% |
United Airlines: base ~USD 382 + fees USD 77 = ~USD 459 total. Southwest Airlines: base ~USD 484 + fees USD 15 = ~USD 499 total.
United Airlines's USD 77 ancillary fees narrow the gap with Southwest Airlines's lower-fee model — the USD 102 base difference shrinks to USD 40 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 St Louis to Houston?
7 airlines flew St Louis to Houston 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 (Frontier), fares ranged USD 325–370 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) |
|---|---|---|---|---|
 Frontier | 11 | 325–370 | 345 | n/a |
 Frontier Airlines | 1 | — | 403 | 10 (2%) |
 F9|WN | 1 | — | 443 | n/a |
 United Airlines | 24 | 420–469 | 459 | 77 (17%) |
 Southwest Airlines | 206 | 499–709 | 499 | 15 (3%) |
 American Airlines | 8 | 550–751 | 602 | 45 (7%) |
 Delta Air Lines | 5 | 548–772 | 697 | 45 (6%) |
Where do the best St Louis → 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: St Louis to Houston flights
- Full-service carriers on St Louis–Houston cost 1.3x more than budget airlines (USD 550 vs USD 416 median; overall median USD 499).
- UA charges 7.7x more in ancillary fees than F9 — USD 77 vs USD 10 avg per booking.
- The same route priced USD 364 apart depending on where it was booked — the lowest median was USD 345. 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 St Louis to Houston cost?
- Based on 256 offers analyzed, St Louis to Houston flights range from USD 325 to USD 822, with a median price of USD 499. Search for your specific dates →
- What hidden fees should I expect on St Louis to Houston flights?
- On average, ancillary fees (bags, seat selection) add USD 23 to the base fare on St Louis to Houston flights. See itemized fees for your itinerary →
- Which airline is cheapest on St Louis to Houston including all fees?
- Frontier has the lowest median fare on St Louis to Houston at USD 345 (median across 11 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest St Louis–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 345. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on St Louis to Houston routes?
- St Louis to Houston has 7 airlines competing, creating a price range from USD 325 to USD 822 across 256 offers. There are two distinct fare clusters on this route: budget options and premium fares. Find where your trip lands in the distribution →
7 airlines, two price clusters — find which fits your budget
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