St. Charles

$60+ Cheap flights from Washington, D.C. (WAS) to St. Charles, MO

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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — STL
Nov 26 — Dec 31
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The best prices from Washington, D.C. to St. Charles are usually found in January or August, booked 61 days in advance, depart on a Saturday or Tuesday and return on a Wednesday

Cheap flight deals from Washington, D.C. to St. Charles

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to St. Charles (CH5). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 21, 2024.

Popular in

March

Cheapest in

January

Round-trip from

$118
(FlightHub)

One-way from

$60
(Frontier)
High demand for flights, 17% potential price rise
Best time to find cheap flights, 10% potential price drop
From Washington, D.C. (WAS) to St. Charles
One-way flight from Washington, D.C. (WAS) to St. Charles

Find flight deals from Washington, D.C. to St. Charles

Cheapest flights from Washington, D.C. to St. Charles
Explore the most affordable flight options available from Washington, D.C. to St. Charles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This FlightHub deal was found by Cheapflights users on 11/20. 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.
Sun 12/89:15 amBWI - STL
1 stop15h 09mFrontier
Tue 12/105:02 pmSTL - BWI
1 stop15h 08mFrontier
Deal found 11/20$128
This Mytrip deal was found by Cheapflights users on 11/20. 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.
Sun 12/85:00 amBWI - STL
1 stop11h 21mSpirit Airlines
Tue 12/104:26 pmSTL - BWI
2 stops17h 49mSpirit Airlines
Deal found 11/20$192
This FlightHub deal was found by Cheapflights users on 11/20. 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.
Wed 12/1110:10 amBWI - STL
1 stop14h 14mMultiple Airlines
Thu 12/124:26 pmSTL - BWI
1 stop16h 11mMultiple Airlines
Deal found 11/20$203
This Delta deal was found by Cheapflights users on 11/21. 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 12/126:00 amBWI - STL
1 stop4h 35mDelta
Sat 12/147:15 amSTL - BWI
1 stop4h 49mDelta
Deal found 11/21$216
This CheapOair deal was found by Cheapflights users on 11/20. 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.
Fri 12/67:19 pmIAD - STL
1 stop28h 27mFrontier
Sun 12/85:02 pmSTL - IAD
1 stop22h 54mFrontier
Deal found 11/20$228
This American Airlines deal was found by Cheapflights users on 11/21. 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 12/128:04 pmDCA - STL
Nonstop2h 49mAmerican Airlines
Sat 12/146:16 amSTL - DCA
Nonstop2h 03mAmerican Airlines
Deal found 11/21$229
This CheapOair deal was found by Cheapflights users on 11/20. 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.
Thu 12/127:00 amDCA - STL
1 stop26h 13mFrontier
Sat 12/146:46 pmSTL - DCA
1 stop21h 13mFrontier
Deal found 11/20$238
This Delta deal was found by Cheapflights users on 11/19. 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 12/106:00 amIAD - STL
1 stop4h 22mDelta
Thu 12/196:29 amSTL - IAD
1 stop4h 21mDelta
Deal found 11/19$248
This Delta deal was found by Cheapflights users on 11/21. 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.
Wed 12/116:00 amDCA - STL
1 stop4h 35mDelta
Mon 12/167:15 amSTL - DCA
1 stop6h 45mDelta
Deal found 11/21$248
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/108:20 amIAD - STL
1 stop7h 05mUnited Airlines
Thu 12/198:25 amSTL - IAD
Nonstop2h 18mUnited Airlines
Deal found 11/19$252
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/146:00 amDCA - STL
1 stop5h 59mUnited Airlines
Sun 12/155:40 pmSTL - DCA
1 stop4h 03mUnited Airlines
Deal found 11/20$260
This Southwest deal was found by Cheapflights users on 11/20. 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 12/193:30 pmBWI - STL
1 stop4h 35mSouthwest
Thu 12/199:25 pmSTL - BWI
Nonstop1h 55mSouthwest
Deal found 11/20$262

Find flights from Washington, D.C. to St. Charles within your budget

Customize your flight search to find flights from Washington, D.C. to St. Charles 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 2,612,795 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Mon 2/3

9:20 pm-11:31 pm

1 stop27h 11m

Lambert-St Louis

Wed 2/5

5:05 pm-8:06 am

1 stop14h 01m

$118

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sun 12/8

5:00 am-3:21 pm

1 stop11h 21m

Lambert-St Louis

Tue 12/10

4:26 pm-11:15 am

2 stops17h 49m

$192

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Wed 12/11

10:10 am-11:24 pm

1 stop14h 14m

Lambert-St Louis

Thu 12/12

4:26 pm-9:37 am

1 stop16h 11m

$203

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 1/4

6:00 pm-9:19 pm

1 stop28h 19m

Lambert-St Louis

Sat 1/11

6:46 pm-12:01 pm

1 stop16h 15m

$213

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 12/12

6:00 am-9:35 am

1 stop4h 35m

Lambert-St Louis

Sat 12/14

7:15 am-1:04 pm

1 stop4h 49m

$216

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Fri 12/6

7:19 pm-10:46 pm

1 stop28h 27m

Lambert-St Louis

Sun 12/8

5:02 pm-4:56 pm

1 stop22h 54m

$228

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Fri 1/17

8:50 am-10:24 am

Nonstop2h 34m

Lambert-St Louis

Sun 1/19

8:15 am-11:33 am

Nonstop2h 18m

$229

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 12/12

8:04 pm-9:53 pm

Nonstop2h 49m

Lambert-St Louis

Sat 12/14

6:16 am-9:19 am

Nonstop2h 03m

$229

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sun 2/16

4:05 pm-7:25 pm

1 stop4h 20m

Lambert-St Louis

Fri 2/21

8:45 am-11:40 am

Nonstop1h 55m

$239

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 1/16

6:00 am-9:36 am

1 stop4h 36m

Lambert-St Louis

Thu 1/16

2:00 pm-7:33 pm

1 stop4h 33m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 36 results
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Best time to book a flight from Washington, D.C. to St. Charles

Have a flexible travel schedule? Discover the best time to fly to St. Charles from Washington, D.C. with our price prediction graph.
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.

Travel insights for flights from Washington, D.C. to St. Charles

Get recent, data-driven insights about flights from Washington, D.C. to St. Charles including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Washington, D.C. to St. Charles?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to St. Charles. Price data was last updated on November 15, 2024.

Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to St. Charles. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Washington, D.C. to St. Charles?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to St. Charles (average of $308). Flying from Washington, D.C. to St. Charles in March is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to CH5?

Find hourly flight availability from Washington, D.C. to St. Charles. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to St. Charles as you normally would.

What is the cheapest day to fly from Washington, D.C. to St. Charles?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to St. Charles. Price data was last updated on November 18, 2024.

Travelers seeking maximum savings on their Washington, D.C. to St. Charles flight should consider departing on Tuesday at noon when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. to St. Charles

Explore weekly flight availability from Washington, D.C. to St. Charles. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 21, 2024.

The most flights from WAS to CH5 are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in St. Charles by month

Plan your trip to St. Charles by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Charles ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Charles when rainfall is around 2.2 in.

Temperature in St. Charles by month

Plan your trip to St. Charles by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Charles, 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).

Reviews of airlines servicing St. Charles

Get insights into the airlines that provide service to St. Charles. 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 St. Charles. Reviews last updated November 21, 2024.
To help decide which airline to fly from Washington, D.C. to St. Charles, see what other customers have to say about Frontier, Spirit Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
5,005 reviews

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

8.1
Very good
5,005 reviews
8.1
Very good
5,005 reviews

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

8.0
Very good
8,755 reviews
8.1
Very good
5,005 reviews

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

7.4
Good
9,172 reviews
8.1
Very good
5,005 reviews

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

7.3
Good
2,811 reviews
8.1
Very good
5,005 reviews

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

7.2
Good
10,000 reviews
8.1
Very good
5,005 reviews

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to St. Charles. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines to fly from Washington, D.C. to St. Charles one-way?

    One-way options have recently been found by users for as low as $60 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $106 and United Airlines from $108 one-way.

  • What are the most popular routes from Washington, D.C. to St. Charles?

  • What are the most reliable airlines from Washington, D.C. to St. Charles?

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to St. Charles consider choosing GoJet (92%), United Airlines (92%) or Avianca (92%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Washington, D.C. to St. Charles?

    While on average a flight from Washington, D.C. to St. Charles is generally $435, our data shows the cheapest flight currently is $114. When looking at the most popular route, (Washington, D.C. Dulles Intl - Lambert-St Louis), you can expect to pay $208 for that flight.

  • Can I find deals for flights from Washington, D.C. to St. Charles that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to St. Charles flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to St. Charles?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to St. Charles.

  • Can I find deals for business class flights from Washington, D.C. to St. Charles?

    Yes. Cheapflights offers flight deals from Washington, D.C. to St. Charles by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. to St. Charles?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to St. Charles (average of $308). Flying from Washington, D.C. to St. Charles in March is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 6 airlines flying from Washington, D.C. to St. Charles

Discover the top 6 airlines that operate flights from Washington, D.C. to St. Charles. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,612,795 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$98Average$168FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$186FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$158Average$438FlexibilityNo cancel feeOn-time69%
DeltaCheapest$175Average$335FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$183Average$435FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$215Average$363FlexibilityNo cancel feeOn-time63%
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