$70+ Cheap flights from Missouri to Delaware
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ILG
May 10 — May 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Missouri to Delaware with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Missouri to Delaware
Cheapest
Best
Last-minute
One-way
Cheapest flights from Missouri to DelawareExplore the most affordable flight options available from Missouri to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.
Explore the most affordable flight options available from Missouri to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.
This Expedia deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:19 pm
STL
- PHL
1 stop7h 25m
Frontier
Sun 5/106:10 pm
PHL
- STL
1 stop7h 11m
Frontier
Deal found 4/6![Frontier logo]()
$140
This Booking.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:19 pm
STL
- PHL
1 stop7h 25m
Frontier
Sat 5/169:05 pm
PHL
- STL
1 stop28h 16m
Frontier
Deal found 4/7![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- PHL
1 stop14h 03m
Frontier
Mon 5/118:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/5![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- PHL
1 stop14h 03m
Frontier
Mon 5/118:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/5![Frontier logo]()
$152
This Frontier deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:21 am
STL
- PHL
1 stop6h 58m
Frontier
Sat 5/24:42 pm
PHL
- STL
1 stop7h 37m
Frontier
Deal found 4/8![Frontier logo]()
$160
This Expedia deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:24 pm
MCI
- PHL
1 stop11h 48m
Frontier
Fri 5/88:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/6![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:21 am
STL
- PHL
1 stop6h 58m
Frontier
Mon 5/47:30 am
PHL
- STL
1 stop16h 49m
Frontier
Deal found 4/8![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/42:15 pm
MCI
- PHL
1 stop14h 19m
Frontier
Mon 5/118:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/6![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:21 am
STL
- PHL
1 stop12h 33m
Multiple Airlines
Mon 5/48:44 pm
PHL
- STL
2 stops37h 11m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- PHL
1 stop14h 03m
Frontier
Sat 5/98:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/5![Frontier logo]()
$170
This CheapOair deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/164:19 pm
STL
- PHL
1 stop15h 35m
Frontier
Thu 5/289:16 pm
PHL
- STL
1 stop27h 41m
Frontier
Deal found 4/10![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:17 pm
STL
- PHL
1 stop8h 17m
Multiple Airlines
Mon 5/118:44 pm
PHL
- STL
2 stops21h 49m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$175
Best flights from Missouri to DelawareDiscover carefully curated flight deals from Missouri to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 10, 2026.
Discover carefully curated flight deals from Missouri to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 10, 2026.
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:50 pm
STL
- PHL
Nonstop2h 10m
Southwest
Sat 5/236:15 am
PHL
- STL
Nonstop2h 25m
Southwest
Deal found 4/5![Southwest logo]()
$277
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/186:12 pm
SGF
- PHL
1 stop5h 03m
American Airlines
Tue 6/2312:07 pm
PHL
- SGF
1 stop6h 35m
American Airlines
Deal found 4/6![American Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:30 am
COU
- PHL
1 stop5h 02m
United Airlines
Sun 4/266:04 am
PHL
- COU
1 stop5h 51m
United Airlines
Deal found 4/6![United Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:05 am
MCI
- PHL
1 stop7h 07m
Delta
Tue 6/25:17 am
PHL
- MCI
1 stop5h 12m
Delta
Deal found 4/6![Delta logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/710:35 am
MCI
- PHL
1 stop21h 19m
Multiple Airlines
Thu 5/149:05 pm
PHL
- MCI
1 stop13h 24m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/141:35 pm
STL
- PHL
Nonstop2h 10m
Southwest
Mon 5/186:10 am
PHL
- STL
Nonstop2h 25m
Southwest
Deal found 4/7![Southwest logo]()
$277
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:55 pm
STL
- PHL
Nonstop2h 10m
Southwest
Wed 5/207:30 am
PHL
- STL
1 stop5h 00m
Southwest
Deal found 4/5![Southwest logo]()
$287
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:35 am
STL
- PHL
1 stop5h 20m
Southwest
Thu 4/307:10 pm
PHL
- STL
Nonstop2h 40m
Southwest
Deal found 4/6![Southwest logo]()
$287
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:28 pm
COU
- PHL
1 stop6h 31m
American Airlines
Sun 4/266:00 am
PHL
- COU
1 stop4h 46m
American Airlines
Deal found 4/7![American Airlines logo]()
$358
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/151:54 pm
JLN
- PHL
2 stops9h 56m
United Airlines
Sat 8/221:31 pm
PHL
- JLN
2 stops11h 22m
United Airlines
Deal found 4/7![United Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:35 am
STL
- PHL
2 stops7h 20m
Southwest
Wed 5/276:35 pm
PHL
- STL
Nonstop2h 25m
Southwest
Deal found 4/5![Southwest logo]()
$292
This American Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:00 am
COU
- PHL
2 stops7h 59m
American Airlines
Wed 4/295:12 pm
PHL
- COU
1 stop5h 18m
American Airlines
Deal found 4/10![American Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:58 pm
SGF
- PHL
1 stop4h 59m
Delta
Sun 8/95:16 am
PHL
- SGF
1 stop6h 36m
Delta
Deal found 4/6![Delta logo]()
$413
This United Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/231:33 pm
SGF
- PHL
1 stop9h 10m
United Airlines
Mon 4/271:27 pm
PHL
- SGF
1 stop4h 57m
United Airlines
Deal found 4/8![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:40 am
STL
- PHL
1 stop3h 55m
Southwest
Sat 5/212:25 pm
PHL
- STL
2 stops8h 55m
Southwest
Deal found 4/5![Southwest logo]()
$302
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:17 am
MCI
- PHL
2 stops7h 03m
United Airlines
Tue 5/56:54 pm
PHL
- MCI
1 stop5h 37m
United Airlines
Deal found 4/5![United Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:58 pm
SGF
- PHL
1 stop4h 59m
Delta
Sun 8/24:08 pm
PHL
- SGF
1 stop7h 02m
Delta
Deal found 4/9![Delta logo]()
$433
This American Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:28 pm
COU
- PHL
1 stop6h 31m
American Airlines
Tue 5/263:51 pm
PHL
- COU
1 stop7h 55m
American Airlines
Deal found 4/10![American Airlines logo]()
$398
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:45 am
STL
- PHL
2 stops7h 10m
Southwest
Wed 5/2011:35 am
PHL
- STL
2 stops9h 25m
Southwest
Deal found 4/7![Southwest logo]()
$327
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/78:50 am
SGF
- PHL
1 stop8h 54m
United Airlines
Thu 5/148:30 pm
PHL
- SGF
1 stop5h 17m
United Airlines
Deal found 4/9![United Airlines logo]()
$406
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:39 am
MCI
- PHL
1 stop6h 39m
Delta
Thu 6/185:16 am
PHL
- MCI
1 stop5h 15m
Delta
Deal found 4/9![Delta logo]()
$451
This Southwest deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/178:05 pm
STL
- PHL
Nonstop2h 10m
Southwest
Wed 5/206:20 am
PHL
- STL
Nonstop2h 25m
Southwest
Deal found 4/9![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:30 pm
COU
- PHL
1 stop5h 20m
United Airlines
Tue 9/11:31 pm
PHL
- COU
1 stop5h 14m
United Airlines
Deal found 4/5![United Airlines logo]()
$408
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:52 pm
SGF
- PHL
1 stop5h 05m
Delta
Sun 5/175:17 pm
PHL
- SGF
1 stop6h 02m
Delta
Deal found 4/9![Delta logo]()
$467
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/301:35 pm
STL
- PHL
Nonstop2h 10m
Southwest
Sun 5/37:30 pm
PHL
- STL
Nonstop2h 40m
Southwest
Deal found 4/6![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:54 pm
JLN
- PHL
2 stops9h 56m
United Airlines
Sat 9/51:31 pm
PHL
- JLN
2 stops11h 22m
United Airlines
Deal found 4/7![United Airlines logo]()
$410
This American Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:21 pm
MCI
- SBY
1 stop4h 37m
American Airlines
Sun 7/266:41 am
SBY
- MCI
1 stop7h 02m
American Airlines
Deal found 4/9![American Airlines logo]()
$520
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/35:12 pm
MCI
- PHL
1 stop6h 47m
Delta
Thu 5/146:12 am
PHL
- MCI
1 stop4h 34m
Delta
Deal found 4/5![Delta logo]()
$482
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/123:05 pm
COU
- PHL
1 stop5h 16m
United Airlines
Sat 8/1510:28 am
PHL
- COU
2 stops8h 17m
United Airlines
Deal found 4/10![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:35 pm
STL
- PHL
1 stop5h 45m
Southwest
Sun 6/76:20 am
PHL
- STL
Nonstop2h 20m
Southwest
Deal found 4/7![Southwest logo]()
$367
Last-minute flights from Missouri to DelawareDiscover last-minute flight deals from Missouri to Delaware. Data last updated April 10, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Delaware. Data last updated April 10, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:21 am
STL
- PHL
1 stop6h 58m
Frontier
Sat 5/24:42 pm
PHL
- STL
1 stop7h 37m
Frontier
Deal found 4/8![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:21 am
STL
- PHL
1 stop6h 58m
Frontier
Mon 5/47:30 am
PHL
- STL
1 stop16h 49m
Frontier
Deal found 4/8![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:21 am
STL
- PHL
1 stop12h 33m
Multiple Airlines
Mon 5/48:44 pm
PHL
- STL
2 stops37h 11m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/42:15 pm
MCI
- PHL
1 stop14h 19m
Frontier
Mon 5/118:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/6![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:17 pm
STL
- PHL
1 stop8h 17m
Multiple Airlines
Mon 5/118:44 pm
PHL
- STL
2 stops21h 49m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- PHL
1 stop14h 03m
Frontier
Mon 5/118:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/5![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- PHL
1 stop14h 03m
Frontier
Sat 5/98:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/5![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- PHL
1 stop14h 03m
Frontier
Mon 5/118:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/5![Frontier logo]()
$150
This Expedia deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:24 pm
MCI
- PHL
1 stop11h 48m
Frontier
Fri 5/88:35 pm
PHL
- MCI
1 stop18h 14m
Frontier
Deal found 4/6![Frontier logo]()
$160
This Expedia deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:19 pm
STL
- PHL
1 stop7h 25m
Frontier
Sun 5/106:10 pm
PHL
- STL
1 stop7h 11m
Frontier
Deal found 4/6![Frontier logo]()
$140
This Booking.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:19 pm
STL
- PHL
1 stop7h 25m
Frontier
Sat 5/169:05 pm
PHL
- STL
1 stop28h 16m
Frontier
Deal found 4/7![Frontier logo]()
$147
This CheapOair deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/164:19 pm
STL
- PHL
1 stop15h 35m
Frontier
Thu 5/289:16 pm
PHL
- STL
1 stop27h 41m
Frontier
Deal found 4/10![Frontier logo]()
$171
One-way flights from Missouri to DelawareSearch for one-way flight options from Missouri to Delaware. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
Search for one-way flight options from Missouri to Delaware. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
This Frontier deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:17 pm
STL
- PHL
1 stop8h 17m
Frontier
Deal found 4/6![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:23 pm
STL
- PHL
1 stop10h 47m
Frontier
Deal found 4/7![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- PHL
1 stop14h 03m
Frontier
Deal found 4/9![Frontier logo]()
$71
This Frontier deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:55 pm
STL
- PHL
1 stop11h 17m
Frontier
Deal found 4/6![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- PHL
1 stop14h 03m
Frontier
Deal found 4/6![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/92:34 pm
MCI
- PHL
1 stop14h 03m
Frontier
Deal found 4/9![Frontier logo]()
$78
This CheapOair deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:59 pm
STL
- PHL
1 stop20h 35m
Frontier
Deal found 4/6![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/42:15 pm
MCI
- PHL
1 stop14h 19m
Frontier
Deal found 4/10![Frontier logo]()
$85
This Expedia deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:24 pm
MCI
- PHL
1 stop11h 48m
Frontier
Deal found 4/6![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:23 pm
STL
- PHL
1 stop10h 47m
Frontier
Deal found 4/6![Frontier logo]()
$87
This Super.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:17 pm
STL
- PHL
1 stop8h 17m
Frontier
Deal found 4/5![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/64:19 pm
STL
- PHL
1 stop6h 45m
Frontier
Deal found 4/5![Frontier logo]()
$90
Find flight deals from Missouri to Delaware
Keep the following information in mind while searching for Missouri to Delaware flight deals. Data was last updated April 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $140 (Expedia) |
One-way from | $70 (Frontier) |
Popular in | November |
Cheapest in | August |
Average price | $386 |
Cheapflights Fare Finder
Customize your flight search to find flights from Missouri to Delaware that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 10, 2026.
Use the filters below to find and compare flights from Missouri to Delaware that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 5/19
6:50 pm-10:00 pm
Nonstop2h 10m
Philadelphia
Sat 5/23
6:15 am-7:40 am
Nonstop2h 25m
$277
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 5/14
1:35 pm-4:45 pm
Nonstop2h 10m
Philadelphia
Mon 5/18
6:10 am-7:35 am
Nonstop2h 25m
$277
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Sat 5/16
6:55 pm-10:05 pm
Nonstop2h 10m
Philadelphia
Wed 5/20
7:30 am-11:30 am
1 stop5h 00m
$287
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 4/28
7:35 am-1:55 pm
1 stop5h 20m
Philadelphia
Thu 4/30
7:10 pm-8:50 pm
Nonstop2h 40m
$287
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Wed 5/20
5:35 am-1:55 pm
2 stops7h 20m
Philadelphia
Wed 5/27
6:35 pm-8:00 pm
Nonstop2h 25m
$292
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Sat 5/2
5:40 am-10:35 am
1 stop3h 55m
Philadelphia
Sat 5/2
12:25 pm-8:20 pm
2 stops8h 55m
$302
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 5/19
5:45 am-1:55 pm
2 stops7h 10m
Philadelphia
Wed 5/20
11:35 am-8:00 pm
2 stops9h 25m
$327
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Sun 5/17
8:05 pm-11:15 pm
Nonstop2h 10m
Philadelphia
Wed 5/20
6:20 am-7:45 am
Nonstop2h 25m
$337
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 4/30
1:35 pm-4:45 pm
Nonstop2h 10m
Philadelphia
Sun 5/3
7:30 pm-9:10 pm
Nonstop2h 40m
$337
SpringfieldPhiladelphia
SGF - PHL
SGFPHL
Springfield-Branson
Thu 6/18
6:12 pm-12:15 am
1 stop5h 03m
Philadelphia
Tue 6/23
12:07 pm-5:42 pm
1 stop6h 35m
$354
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Missouri to Delaware
Have a flexible travel schedule? Discover the best time to fly to Delaware from Missouri with our price prediction graph.
STL-PHL
MCI-PHL
SGF-PHL
COU-PHL
JLN-PHL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Missouri to Delaware
USMO-USDE
STL-PHL
MCI-PHL
SGF-PHL
COU-PHL
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Missouri to Delaware. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations