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Dulles Intl

$54+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — IAD
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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Cheap 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 September 19, 2025.

Round-trip from

$117
(United Airlines)

One-way from

$54
(Kiwi.com)

Popular in

November

Cheapest in

April

Average price

$334

Good round-trip deal

$295 or less

Good one-way deal

$125 or less
From New York LaGuardia to Washington, D.C. Dulles Intl
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One-way flight from New York LaGuardia to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 11% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from New York LaGuardia to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from New York LaGuardia to Washington, D.C. Dulles Intl.
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Find 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 September 19, 2025.

This United Airlines deal was found by Cheapflights users on 9/18. 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.
Fri 10/106:00 amLGA - IAD
Nonstop1h 32mUnited Airlines
Sat 10/115:13 pmIAD - LGA
Nonstop1h 34mUnited Airlines
Deal found 9/18$117
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/286:00 amLGA - IAD
Nonstop1h 27mUnited Airlines
Fri 10/3110:12 pmIAD - LGA
Nonstop1h 18mUnited Airlines
Deal found 9/18$123
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/166:00 amLGA - IAD
Nonstop1h 32mUnited Airlines
Thu 10/2312:40 pmIAD - LGA
Nonstop1h 34mUnited Airlines
Deal found 9/18$126
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 10/410:24 amLGA - IAD
Nonstop1h 30mUnited Airlines
Sat 10/1110:21 pmIAD - LGA
Nonstop1h 23mUnited Airlines
Deal found 9/17$127
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/186:00 amLGA - IAD
Nonstop1h 32mUnited Airlines
Sat 10/1812:40 pmIAD - LGA
Nonstop1h 34mUnited Airlines
Deal found 9/18$129
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/76:00 amLGA - IAD
Nonstop1h 32mUnited Airlines
Wed 10/88:21 amIAD - LGA
Nonstop1h 22mUnited Airlines
Deal found 9/17$133
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/306:00 amLGA - IAD
Nonstop1h 32mUnited Airlines
Tue 9/3010:20 pmIAD - LGA
Nonstop1h 23mUnited Airlines
Deal found 9/16$137
This Frontier deal was found by Cheapflights users on 9/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:30 amLGA - IAD
1 stop6h 25mFrontier
Mon 10/63:15 pmIAD - LGA
1 stop6h 59mFrontier
Deal found 9/18$139
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:30 amLGA - IAD
1 stop6h 25mFrontier
Fri 10/33:15 pmIAD - LGA
1 stop6h 59mFrontier
Deal found 9/17$143
This Frontier deal was found by Cheapflights users on 9/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1712:59 pmLGA - IAD
1 stop7h 44mFrontier
Fri 10/2410:11 amIAD - LGA
1 stop10h 48mFrontier
Deal found 9/17$144
This Frontier deal was found by Cheapflights users on 9/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:30 amLGA - IAD
1 stop6h 25mFrontier
Sat 10/114:22 pmIAD - LGA
1 stop5h 59mFrontier
Deal found 9/17$145

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 September 19, 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 10/10

6:00 am-7:32 am

Nonstop1h 32m

Washington, D.C. Dulles Intl

Sat 10/11

10:21 pm-11:44 pm

Nonstop1h 23m

$117

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 12/5

6:00 am-7:27 am

Nonstop1h 27m

Washington, D.C. Dulles Intl

Sat 12/6

10:23 pm-11:44 pm

Nonstop1h 21m

$117

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Thu 10/16

6:00 am-7:32 am

Nonstop1h 32m

Washington, D.C. Dulles Intl

Tue 10/21

12:40 pm-2:14 pm

Nonstop1h 34m

$117

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 12/13

6:00 am-7:27 am

Nonstop1h 27m

Washington, D.C. Dulles Intl

Sun 12/14

10:23 pm-11:44 pm

Nonstop1h 21m

$117

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 12/12

6:00 am-7:27 am

Nonstop1h 27m

Washington, D.C. Dulles Intl

Sun 12/14

10:23 pm-11:44 pm

Nonstop1h 21m

$126

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 10/18

10:24 am-11:54 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sat 10/18

5:13 pm-6:47 pm

Nonstop1h 34m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 10/8

6:00 am-7:32 am

Nonstop1h 32m

Washington, D.C. Dulles Intl

Fri 10/10

10:20 pm-11:43 pm

Nonstop1h 23m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 10/15

6:00 am-7:32 am

Nonstop1h 32m

Washington, D.C. Dulles Intl

Thu 10/16

10:20 pm-11:43 pm

Nonstop1h 23m

$133

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 10/24

5:32 pm-11:29 pm

1 stop5h 57m

Washington, D.C. Dulles Intl

Mon 10/27

5:00 pm-10:44 pm

1 stop5h 44m

$143

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 9/27

8:47 pm-9:17 am

1 stop12h 30m

Washington, D.C. Dulles Intl

Mon 9/29

1:55 pm-11:57 pm

1 stop10h 02m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/18

Showing 1-10 of 23 results
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The best insider tips for New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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

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, August 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 $292). Flying from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 September 19, 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 52% 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 September 14, 2025.

Travelers seeking maximum savings on their New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday evenings 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.

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 September 19, 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
8,926 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

EWR - DEN

Terribly delayed flight, missed ongoing flight, hotel very downmarket Food voucher not accepted in hotel
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

EWR - DEN

Terribly delayed flight, missed ongoing flight, hotel very downmarket Food voucher not accepted in hotel

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 32m. 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 $129, was found to be the cheapest airline from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport.. United Airlines is currently priced 55% 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 (85%), Avianca (84%) or Mesa Airlines (73%) 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 $78. On average you can expect to pay $693. The most popular route, (New York LaGuardia - Washington, D.C. Dulles Intl), can usually be booked for $117.

  • 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, August 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 $292). Flying from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
National Harbor
Dundalk

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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 September 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$129Average$296FlexibilityNo cancel feeOn-time69%

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