$104 Cheap Delta flights Raleigh (RDU) to St. Louis (STL)

View $104 flight on Tue, Nov 18, 2025Opens in a new window

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$104 Cheap Delta flights Raleigh (RDU) to St. Louis (STL)

Prices were available within the past 7 days and start at $104 for one-way flights and $207 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Sep 30 - Mon, Oct 6
RDU
Raleigh
STL
St. Louis
$207 Roundtrip, found 7 hours ago
$207
Roundtrip
found 7 hours ago
Select Delta flight, departing Tue, Sep 30 from Raleigh to St. Louis, returning Mon, Oct 6, priced at $207 found 7 hours ago
Delta
Sat, Sep 20 - Mon, Sep 22
RDU
Raleigh
STL
St. Louis
$219 Roundtrip, found 10 hours ago
$219
Roundtrip
found 10 hours ago
Select Delta flight, departing Sat, Sep 20 from Raleigh to St. Louis, returning Mon, Sep 22, priced at $219 found 10 hours ago
Delta
Sat, Oct 4 - Mon, Oct 6
RDU
Raleigh
STL
St. Louis
$224 Roundtrip, found 7 hours ago
$224
Roundtrip
found 7 hours ago
Select Delta flight, departing Sat, Oct 4 from Raleigh to St. Louis, returning Mon, Oct 6, priced at $224 found 7 hours ago
Delta
Tue, Oct 14 - Wed, Oct 22
RDU
Raleigh
STL
St. Louis
$235 Roundtrip, found 12 hours ago
$235
Roundtrip
found 12 hours ago
Select Delta flight, departing Tue, Oct 14 from Raleigh to St. Louis, returning Wed, Oct 22, priced at $235 found 12 hours ago
Flights from Raleigh (RDU) to St. Louis (STL)
Origin airport
Raleigh - Durham Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Popular airline
American Airlines
Distance
665 mi
Average flight time
1 hour 5 mins

Frequently asked questions

How much is a Delta Air Lines flight from Raleigh - Durham Intl. Airport (RDU) to Lambert-St. Louis Intl. Airport (STL)?
Finding cheap one-way Delta Air Lines flights from RDU to STL from $104 on Expedia is easy --- just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares from $207 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from RDU to STL with Delta Air Lines?
Browse for one-way or return flights to St. Louis in January or February. You could find cheaper fares with Delta Air Lines during these off-season months.
What is the cheapest time to book flights from Raleigh - Durham Intl. Airport (RDU) to Lambert-St. Louis Intl. Airport (STL) with Delta Air Lines?
To find cheap Delta Air Lines fares from Raleigh - Durham Intl. Airport (RDU) to Lambert-St. Louis Intl. Airport (STL), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the overall price. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Raleigh - Durham Intl. Airport (RDU) to Lambert-St. Louis Intl. Airport (STL)?
Fill in your dates, press search and tick the "Nonstop" filter on Expedia to find any direct flights from RDU to STL with Delta Air Lines or another airline.
What is the earliest Delta Air Lines flight from RDU to STL?
Sort your results by "Morning" and "Early Morning" to browse the earliest departures from RDU to STL. Setting off early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in St. Louis?
Delta Air Lines flights from Raleigh - Durham Intl. Airport (RDU) to St. Louis come in to Lambert-St. Louis Intl. Airport (STL). This is the main gateway here.
Why fly with Delta Air Lines from RDU to STL?
Delta Air Lines makes traveling from RDU to STL more enjoyable with an excellent in-flight experience and a rewarding loyalty program. You even have the chance to collect points with Delta SkyMiles. Be sure to sign up to Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Raleigh - Durham Intl. Airport (RDU) to Lambert-St. Louis Intl. Airport (STL)?
Changes are generally free within 24 hours of booking, but your airline may charge you after that. For more information about modifying your reservation, check out your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your plans without additional charges, tick the "Changes included" or "No cancel fee" filter when planning your next break.

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