$75+ Cheap flights from St. Louis (STL) 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from St. Louis 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 St. Louis to Delaware
Keep the following information in mind while searching for St. Louis to Delaware flight deals. Data was last updated June 12, 2025.
Round-trip from | $256 (FlightHub) |
|---|---|
One-way from | $75 (FlightHub) |
Popular in | March |
Cheapest in | July |
Average price | $321 |
Find flight deals from St. Louis to Delaware
Cheapest flights from St. Louis to DelawareExplore the most affordable flight options available from St. Louis to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from St. Louis to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 6/11. 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.
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/11. 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.
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis 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 June 12, 2025.
Use the filters below to find and compare flights from St. Louis to Delaware that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Sat 7/5
11:00 am-12:21 am
1 stop12h 21m
Philadelphia
Sat 7/12
5:30 am-1:59 pm
1 stop9h 29m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 7/10
10:47 am-8:07 pm
3 stops32h 20m
Philadelphia
Sun 7/13
7:00 am-9:52 am
1 stop3h 52m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Mon 8/11
7:50 am-11:00 am
Nonstop2h 10m
Philadelphia
Fri 8/15
7:30 pm-9:00 pm
Nonstop2h 30m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 7/8
5:40 pm-2:18 pm
1 stop19h 38m
Philadelphia
Tue 7/22
7:05 pm-10:29 am
1 stop16h 24m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Wed 7/9
5:14 pm-8:25 pm
Nonstop2h 11m
Philadelphia
Tue 7/15
11:00 am-12:34 pm
Nonstop2h 34m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 7/8
3:41 pm-10:23 pm
1 stop5h 42m
Philadelphia
Tue 7/15
6:00 am-9:33 am
1 stop4h 33m
St. LouisSalisbury
STL - SBY
STLSBY
Lambert-St Louis
Sat 8/2
4:07 pm-10:11 pm
1 stop5h 04m
Salisbury-Ocean City
Wed 8/6
5:25 pm-11:05 pm
1 stop6h 40m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Sat 7/5
6:33 am-6:48 pm
2 stops11h 15m
Philadelphia
Sat 7/12
6:30 am-10:40 am
1 stop5h 10m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Mon 8/25
8:44 am-5:10 pm
1 stop7h 26m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Mon 8/4
8:25 pm-11:35 pm
Nonstop2h 10m
Best time to book a flight from St. Louis to Delaware
Have a flexible travel schedule? Discover the best time to fly to Delaware from St. Louis with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Delaware
Rainfall in Delaware by month
Plan your trip to Delaware by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Delaware ranges from 2.9 - 4.3 inches per month. July is typically the wettest month, when rainfall can reach 4.3 in. February is typically the driest time to visit Delaware when rainfall is around 2.9 in.
Temperature in Delaware by month
Plan your trip to Delaware by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Delaware, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Reviews of airlines servicing Delaware
Get insights into the airlines that provide service to Delaware. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Delaware. Reviews last updated June 12, 2025.
Read through reviews of airlines operating flights from St. Louis to Delaware, such as Southwest, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
John,May 2025
PVD - BNA
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
John,May 2025
PVD - BNA
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
John,May 2025
PVD - BNA
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
John,May 2025
PVD - BNA
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
John,May 2025
PVD - BNA
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
John,May 2025
PVD - BNA