Flights Nashville → St Louis
As of October 2026, economy flights from Nashville to St Louis have a typical range USD 278–599, median USD 403. Full range across all 235 offers: USD 247–1041. We analyzed 235 offers from 5 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: Nashville → St Louis
Based on 235 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Nashville → St Louis
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Southwest | Included | Included | — |
| American Airlines | Included | USD 35 | — |
| Southwest | — | USD 90 | — |
| United | Included | USD 35 | — |
| Delta | 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 Nashville to St Louis cost?
Based on 235 offers · October 2026
Nashville to St Louis flights ranged from USD 247 to USD 1041 across 235 offers analyzed in October 2026. The chart below shows how prices distributed across all 235 offers.
These 235 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 354 and USD 471
What hidden fees do Nashville to St Louis flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Nashville to St Louis routes. The breakdown below is based on 235 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| WN | 20 | 4% |
| AA | 64 | 22% |
| Southwest | 93 | 29% |
| UA | 50 | 12% |
| DL | 45 | 7% |
Southwest: base ~USD 227 + fees USD 93 = ~USD 320 total. Southwest Airlines: base ~USD 419 + fees USD 20 = ~USD 439 total.
Southwest's USD 93 ancillary fees narrow the gap with Southwest Airlines's lower-fee model — the USD 192 base difference shrinks to USD 119 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 Nashville to St Louis?
5 airlines flew Nashville to St Louis 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.
Even on the cheapest airline (American Airlines), fares ranged USD 278–349 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) |
|---|---|---|---|---|
 American Airlines | 16 | 278–349 | 278 | 64 (23%) |
 Southwest | 12 | 293–330 | 320 | 93 (29%) |
 United Airlines | 55 | 356–449 | 378 | 50 (13%) |
 Southwest Airlines | 138 | 272–599 | 439 | 20 (4%) |
 Delta Air Lines | 14 | 466–981 | 526 | 45 (9%) |
Where do the best Nashville → St Louis 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: Nashville to St Louis flights
- Full-service carriers on Nashville–St Louis cost 1.0x more than budget airlines (USD 394 vs USD 379 median; overall median USD 403).
- Southwest charges 4.7x more in ancillary fees than WN — USD 93 vs USD 20 avg per booking.
- The same route priced USD 278 apart depending on where it was booked — the lowest median was USD 262. 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 Nashville to St Louis cost?
- Based on 235 offers analyzed, Nashville to St Louis flights range from USD 247 to USD 1041, with a median price of USD 403. Search for your specific dates →
- What hidden fees should I expect on Nashville to St Louis flights?
- On average, ancillary fees (bags, seat selection) add USD 35 to the base fare on Nashville to St Louis flights. See itemized fees for your itinerary →
- Which airline is cheapest on Nashville to St Louis including all fees?
- American Airlines has the lowest median fare on Nashville to St Louis at USD 278 (median across 16 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Nashville–St Louis 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 262. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Nashville to St Louis routes?
- Nashville to St Louis has 5 airlines competing, creating a price range from USD 247 to USD 1041 across 235 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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