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Dulles Intl

$65+ Cheap flights from LaGuardia, NY (LGA) to Dulles Intl (IAD)

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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — IAD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from LaGuardia to Dulles Intl

Cheapest flights from LaGuardia to Dulles Intl
Explore the most affordable flight options available from LaGuardia to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. 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 12/306:00 amLGA - IAD
Nonstop1h 30mUnited Airlines
Thu 1/15:10 pmIAD - LGA
Nonstop1h 34mUnited Airlines
Deal found 12/16$147
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/3110:26 amLGA - IAD
Nonstop1h 29mUnited Airlines
Thu 1/15:10 pmIAD - LGA
Nonstop1h 34mUnited Airlines
Deal found 12/17$167
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/3110:26 amLGA - IAD
Nonstop1h 29mUnited Airlines
Wed 12/3110:20 pmIAD - LGA
Nonstop1h 23mUnited Airlines
Deal found 12/15$186
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/306:00 amLGA - IAD
Nonstop1h 30mUnited Airlines
Sat 1/310:20 pmIAD - LGA
Nonstop1h 23mUnited Airlines
Deal found 12/17$190
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Sun 12/286:00 amLGA - IAD
Nonstop1h 30mUnited Airlines
Sat 1/310:20 pmIAD - LGA
Nonstop1h 23mUnited Airlines
Deal found 12/16$213
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/306:00 amLGA - IAD
Nonstop1h 30mUnited Airlines
Tue 12/3010:20 pmIAD - LGA
Nonstop1h 23mUnited Airlines
Deal found 12/15$226
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/246:00 amLGA - IAD
Nonstop1h 30mUnited Airlines
Wed 12/245:10 pmIAD - LGA
Nonstop1h 34mUnited Airlines
Deal found 12/17$233
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/172:55 pmLGA - IAD
Nonstop1h 27mUnited Airlines
Wed 2/410:20 pmIAD - LGA
Nonstop1h 23mUnited Airlines
Deal found 12/16$241
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/2510:26 amLGA - IAD
Nonstop1h 29mUnited Airlines
Sat 12/2710:20 pmIAD - LGA
Nonstop1h 23mUnited Airlines
Deal found 12/16$245
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Mon 12/296:00 amLGA - IAD
Nonstop1h 30mUnited Airlines
Thu 1/15:10 pmIAD - LGA
Nonstop1h 34mUnited Airlines
Deal found 12/16$250
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/276:00 amLGA - IAD
Nonstop1h 30mUnited Airlines
Thu 1/15:10 pmIAD - LGA
Nonstop1h 34mUnited Airlines
Deal found 12/16$251
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/2510:26 amLGA - IAD
Nonstop1h 29mUnited Airlines
Mon 12/2910:20 pmIAD - LGA
Nonstop1h 23mUnited Airlines
Deal found 12/16$255

Find flight deals from LaGuardia to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from LaGuardia (LGA) to Dulles Intl (IAD). 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$127
(Kiwi.com)

One-way from

$65
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$378

Good round-trip deal

$373 or less

Good one-way deal

$165 or less
Provider with most accurate pricing for New York LaGuardia-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for New York LaGuardia-Washington, D.C. Dulles Intl flights.
Search Deals
From New York LaGuardia to Washington, D.C. Dulles Intl
Search Deals
One-way flight from New York LaGuardia to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from New York LaGuardia to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from New York LaGuardia to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from LaGuardia to Dulles Intl 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 December 18, 2025.
Use the filters below to find and compare flights from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

LaGuardia

Fly to

Dulles Intl

Route

Depart

Return

Price

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 1/30

10:28 am-11:55 am

Nonstop1h 27m

Washington, D.C. Dulles Intl

Mon 2/2

10:20 pm-11:43 pm

Nonstop1h 23m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 1/10

10:34 am-11:53 am

Nonstop1h 19m

Washington, D.C. Dulles Intl

Sun 1/11

8:20 am-9:47 am

Nonstop1h 27m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 1/17

7:29 pm-8:59 pm

Nonstop1h 30m

Washington, D.C. Dulles Intl

Tue 1/20

5:10 pm-6:44 pm

Nonstop1h 34m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 1/16

7:29 pm-8:59 pm

Nonstop1h 30m

Washington, D.C. Dulles Intl

Mon 1/19

8:20 am-9:47 am

Nonstop1h 27m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Tue 12/30

6:00 am-7:30 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Thu 1/1

5:10 pm-6:44 pm

Nonstop1h 34m

$147

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 1/10

6:52 pm-7:40 am

1 stop12h 48m

Washington, D.C. Dulles Intl

Wed 1/14

6:00 am-4:29 pm

1 stop10h 29m

$162

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 12/31

10:26 am-11:55 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Thu 1/1

5:10 pm-6:44 pm

Nonstop1h 34m

$167

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 12/31

10:26 am-11:55 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Wed 12/31

10:20 pm-11:43 pm

Nonstop1h 23m

$186

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sun 1/11

6:00 am-7:30 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 1/11

12:40 pm-2:14 pm

Nonstop1h 34m

$189

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 1/21

10:28 am-11:55 am

Nonstop1h 27m

Washington, D.C. Dulles Intl

Wed 1/21

5:10 pm-6:44 pm

Nonstop1h 34m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 23 results
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Compare providers for flights from LaGuardia to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from LaGuardia to Dulles Intl in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from LaGuardia to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from LaGuardia 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.

Cheapflights Insights

Everything you need to know about your flight from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport?

Currently, March is the cheapest month in which you can book a flight from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport (average of $91). Flying from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $213). 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 LGA to IAD?

Find hourly flight availability from LaGuardia to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s typically best to fly out from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport in the morning. Doing so could potentially save you 53% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from LaGuardia to Dulles Intl. Price data was last updated on December 13, 2025.

Travelers seeking maximum savings on their New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport trip
Airports
LGA

For a smooth departure from LGA, check your boarding pass to ensure you're at the correct terminal and allow time for terminal transfers if needed.

Read more about LGABy Brandon Schultz
IAD

Upon arrival at IAD, the Silver Line Metro offers a cost-effective way to reach downtown Washington, D.C. in under 40 minutes.

Read more about IADBy Ramsey Qubein
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on LGA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated December 18, 2025.
See what other customers who have flown with United Airlines from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,091 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Tim,Sep 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Tim,Sep 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Related info for your journey

Find useful and relevant information for your journey from LaGuardia to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport?

    Departing from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport will take you 1h 27m. There are 228 mi between New York LaGuardia Airport and Washington, D.C. Dulles Intl Airport. Generally, flights for this route are nonstop.

  • What is the cheapest airline to fly from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport round-trip?

    United Airlines, at $120, was found to be the cheapest airline from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport.. United Airlines is currently priced 57% below the average price you’ll pay for this route.

  • What are the most reliable airlines from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport?

    No one likes to see their flight delayed. When booking a flight from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport consider choosing ANA (92%), Republic Airways (81%) or United Airlines (76%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport?

    The cheapest flight price from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport is $104. On average you can expect to pay $559. The most popular route, (New York LaGuardia - Washington, D.C. Dulles Intl), can usually be booked for $129.

  • Can I find deals for flights from LaGuardia to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on LaGuardia to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from LaGuardia to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from LaGuardia to Dulles Intl.

  • Can I find deals for business class flights from LaGuardia to Dulles Intl?

    Yes. Cheapflights offers flight deals from LaGuardia to Dulles Intl 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 New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport (average of $91). Flying from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $213). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Cordova

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from LaGuardia to Dulles Intl

Discover the top airline that operate flights from LaGuardia to Dulles Intl. 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 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$121Average$277FlexibilityNo cancel feeOn-time69%

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