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Dulles Intl

$75+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — IAD
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
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 August 1, 2026.

This Frontier deal was found by Cheapflights users on 7/30. 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.
Sat 9/126:15 am
LGA
-
IAD
1 stop11h 03m
Frontier
Sat 9/197:50 am
IAD
-
LGA
1 stop8h 10m
Frontier
Deal found 7/30$150
This Frontier deal was found by Cheapflights users on 7/30. 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.
Sat 9/126:15 am
LGA
-
IAD
1 stop11h 03m
Frontier
Wed 9/167:50 am
IAD
-
LGA
1 stop8h 10m
Frontier
Deal found 7/30$160
This Frontier deal was found by Cheapflights users on 8/1. 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.
Tue 9/154:55 pm
LGA
-
IAD
1 stop7h 15m
Frontier
Tue 9/227:50 am
IAD
-
LGA
1 stop8h 10m
Frontier
Deal found 8/1$161
This Frontier deal was found by Cheapflights users on 7/30. 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.
Sat 9/126:15 am
LGA
-
IAD
1 stop11h 03m
Frontier
Tue 9/157:50 am
IAD
-
LGA
1 stop8h 10m
Frontier
Deal found 7/30$176
This Frontier deal was found by Cheapflights users on 8/1. 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.
Sat 10/106:25 am
LGA
-
IAD
1 stop11h 11m
Frontier
Sat 10/177:00 am
IAD
-
LGA
1 stop10h 35m
Frontier
Deal found 8/1$181
This Frontier deal was found by Cheapflights users on 8/1. 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 9/104:55 pm
LGA
-
IAD
1 stop7h 15m
Frontier
Thu 9/177:50 am
IAD
-
LGA
1 stop8h 10m
Frontier
Deal found 8/1$183
This Frontier deal was found by Cheapflights users on 8/1. 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.
Wed 8/196:18 am
LGA
-
IAD
1 stop10h 56m
Frontier
Wed 8/266:20 am
IAD
-
LGA
1 stop9h 40m
Frontier
Deal found 8/1$184

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 August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$150
(Frontier)

One-way from

$75
(Frontier)

Popular in

March

Cheapest in

February

Average price

$318

Good round-trip deal

$376 or less

Good one-way deal

$203 or less
Provider with most accurate pricing for New York LaGuardia-Washington, D.C. Dulles Intl flight deals.
Search Deals
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. 1% potential increase in price ($4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
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 August 1, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 10/24

10:25 am-11:55 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Tue 10/27

10:10 pm-11:34 pm

Nonstop1h 24m

$219
Quickest round-trip

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Tue 9/29

6:00 am-7:23 am

Nonstop1h 23m

Washington, D.C. Dulles Intl

Tue 9/29

10:10 pm-11:30 pm

Nonstop1h 20m

$239

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sun 8/30

7:29 pm-9:02 pm

Nonstop1h 33m

Washington, D.C. Dulles Intl

Tue 9/1

12:40 pm-2:09 pm

Nonstop1h 29m

$239

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 8/21

7:29 pm-9:02 pm

Nonstop1h 33m

Washington, D.C. Dulles Intl

Sun 8/23

10:09 pm-11:30 pm

Nonstop1h 21m

$239

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 10/23

6:00 am-7:23 am

Nonstop1h 23m

Washington, D.C. Dulles Intl

Mon 10/26

10:10 pm-11:34 pm

Nonstop1h 24m

$270

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 8/12

2:55 pm-4:30 pm

Nonstop1h 35m

Washington, D.C. Dulles Intl

Thu 8/13

10:09 pm-11:30 pm

Nonstop1h 21m

$272

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Thu 8/20

10:20 am-11:50 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 8/23

10:09 pm-11:30 pm

Nonstop1h 21m

$289

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 8/8

6:00 am-7:26 am

Nonstop1h 26m

Washington, D.C. Dulles Intl

Mon 8/10

10:05 pm-11:30 pm

Nonstop1h 25m

$303

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 9/25

6:00 am-7:23 am

Nonstop1h 23m

Washington, D.C. Dulles Intl

Sun 9/27

10:10 pm-11:30 pm

Nonstop1h 20m

$318

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Mon 8/24

7:29 pm-9:02 pm

Nonstop1h 33m

Washington, D.C. Dulles Intl

Mon 8/31

8:18 am-9:39 am

Nonstop1h 21m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 22 resultsSorted by cheapest first
1
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3

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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, February 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 $275). Flying from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $368). 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 August 1, 2026.

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 67% 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 August 1, 2026.

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

How much does it cost to fly round-trip from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport flights typically cost between $268 and $371 in September.
The cheapest round-trip price found within the last 5 days was $150 on Frontier (Sep 12-Sep 19).

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
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on LGA

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

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 August 1, 2026.
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
10,062 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
10,062 reviews
United Airlines
7.4
Good
10,062 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 30m. 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 $127, was found to be the cheapest airline from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport.. United Airlines is currently priced 59% 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 (89%), Avianca (84%) or Mesa Airlines (80%) 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 $123. On average you can expect to pay $2,016. The most popular route, (New York LaGuardia - Washington, D.C. Dulles Intl), can usually be booked for $229.

  • 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, February 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 $275). Flying from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $368). 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
Owings Mills
Arlington
Tysons
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Hanover
Laurel
Sterling
Clinton
Hunt Valley
Cordova
Woodbridge

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 August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$127Average$307FlexibilityNo cancel feeOn-time69%

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