Flights St Louis → Jacksonville
As of November 2026, economy flights from St Louis to Jacksonville have a typical range USD 330–592, median USD 360. Full range across all 228 offers: USD 292–1065. We analyzed 228 offers from 6 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: St Louis → Jacksonville
Based on 228 offers · November 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: St Louis → Jacksonville
Add-on pricing from the cheapest available offer per airline · November 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Delta | Included | USD 35 | — |
| Southwest Airlines | Included | Included | — |
| United | Included | USD 35 | — |
| United | — | USD 100 | — |
| Southwest | — | USD 90 | — |
| 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 Jacksonville cost?
Based on 228 offers · November 2026
St Louis to Jacksonville flights ranged from USD 292 to USD 1065 across 228 offers analyzed in November 2026. The chart below shows how prices distributed across all 228 offers.
These 228 offers (November 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 345 and USD 436
What hidden fees do St Louis to Jacksonville flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on St Louis to Jacksonville routes. The breakdown below is based on 228 offers analyzed in November 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| DL | 45 | 9% |
| WN | 19 | 5% |
| UA | 45 | 12% |
| United | 100 | 31% |
| Southwest | 90 | 26% |
| AA | 45 | 9% |
United: base ~USD 222 + fees USD 100 = ~USD 322 total. Southwest Airlines: base ~USD 341 + fees USD 19 = ~USD 360 total.
United's USD 100 ancillary fees narrow the gap with Southwest Airlines's lower-fee model — the USD 119 base difference shrinks to USD 38 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 Jacksonville?
6 airlines flew St Louis to Jacksonville 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) |
|---|---|---|---|---|
 United | 1 | — | 322 | 100 (31%) |
 Southwest | 9 | 333–355 | 345 | 90 (26%) |
 United Airlines | 51 | 323–437 | 346 | 45 (13%) |
 Southwest Airlines | 134 | 330–588 | 360 | 19 (5%) |
 Delta Air Lines | 17 | 292–725 | 375 | 45 (12%) |
 American Airlines | 16 | 384–589 | 476 | 45 (9%) |
Where do the best St Louis → Jacksonville 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 Jacksonville flights
- Full-service carriers on St Louis–Jacksonville cost 1.1x more than budget airlines (USD 380 vs USD 353 median; overall median USD 360).
- United charges 5.1x more in ancillary fees than WN — USD 100 vs USD 19 avg per booking.
- The same route priced USD 269 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 Jacksonville cost?
- Based on 228 offers analyzed, St Louis to Jacksonville flights range from USD 292 to USD 1065, with a median price of USD 360. Search for your specific dates →
- What hidden fees should I expect on St Louis to Jacksonville flights?
- On average, ancillary fees (bags, seat selection) add USD 32 to the base fare on St Louis to Jacksonville flights. See itemized fees for your itinerary →
- Which airline is cheapest on St Louis to Jacksonville including all fees?
- United has the lowest median fare on St Louis to Jacksonville at USD 322 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest St Louis–Jacksonville 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 Jacksonville routes?
- St Louis to Jacksonville has 6 airlines competing, creating a price range from USD 292 to USD 1065 across 228 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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