Popular in | May |
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Cheapest in | December |
Round-trip from | $210 |
One-way from | $110 (United Airlines) |
Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 32% on your flight compared to booking on days when demand is much higher.
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 42 days in advance, which can save you up to 137% on flights from Washington, D.C. Dulles Intl Airport to St. Louis compared to booking the week you need them. Waiting 42 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $407. For sooner than that we have options available in the next 3 days from $496.
The best pricing can be found in the month of August. Prices to St. Louis from Washington, D.C. Dulles Intl Airport average $319. You can even find prices in August for less than $319, as users have found deals to St. Louis from as low as $169. The month of March appears to be one of the more expensive times to travel to St. Louis from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 18%.
It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to St. Louis in the morning. Doing so could potentially save you 13% on the flight price compared to flying in the afternoon, which is usually more expensive.
Fly from
Fly to
Budget
$210 - $320
Route
Depart
Return
Price
Washington, D.C. Dulles IntlLambert-St Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Thu 8/15
1 stop6h 06m
Lambert-St Louis
Mon 8/19
1 stop5h 41m
Washington, D.C. Dulles IntlLambert-St Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Sat 8/17
Nonstop2h 07m
Lambert-St Louis
Wed 8/21
Nonstop2h 08m
Washington, D.C. Dulles IntlLambert-St Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Sat 8/17
Nonstop2h 07m
Lambert-St Louis
Wed 8/21
1 stop5h 57m
Washington, D.C. Dulles IntlLambert-St Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Thu 8/15
1 stop3h 59m
Lambert-St Louis
Mon 8/19
1 stop3h 52m
Washington, D.C. Dulles IntlLambert-St Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Thu 8/22
Nonstop2h 21m
Lambert-St Louis
Thu 8/29
1 stop4h 16m
Washington, D.C. Dulles IntlLambert-St Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Thu 8/29
1 stop4h 21m
Lambert-St Louis
Sun 9/1
1 stop5h 32m
Washington, D.C. Dulles IntlLambert-St Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Fri 9/20
1 stop4h 19m
Lambert-St Louis
Tue 9/24
1 stop6h 23m
Washington, D.C. Dulles IntlLambert-St Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Fri 10/4
1 stop4h 19m
Lambert-St Louis
Sun 10/6
1 stop3h 50m
Washington, D.C. Dulles IntlLambert-St Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Mon 8/26
3 stops23h 57m
Lambert-St Louis
Wed 8/28
3 stops26h 23m
STL Temperature | 32 - 80.6 °F |
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If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Entertainment
Comfort
Boarding
Overall
Food
Crew
Reviews
One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida
Entertainment
Comfort
Boarding
Overall
Food
Crew
Reviews
One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida
Entertainment
Comfort
Boarding
Overall
Food
Crew
Reviews
One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida
Entertainment
Comfort
Boarding
Overall
Food
Crew
Reviews
One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida
Entertainment
Comfort
Boarding
Overall
Food
Crew
Reviews
One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida
Entertainment
Comfort
Boarding
Overall
Food
Crew
Reviews
One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$191 | Average$287 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$218 | Average$461 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$239 | Average$370 | FlexibilityNo cancel fee | On-time71% |
1%of flight departures | Early morningMidnight to 6 am |
---|---|
37%of flight departures | Morning6 am to noon |
62%of flight departures | AfternoonNoon to 6 pm |
0%of flight departures | Evening6 pm to midnight |
Sunday | 6daily flights |
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Monday | 5daily flights |
Tuesday | 5daily flights |
Wednesday | 5daily flights |
Thursday | 5daily flights |
Friday | 5daily flights |
Saturday | 5daily flights |