In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 35.6 F).

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 (80%), Avianca (77%) or Mesa Airlines (70%) as they are the most reliable in getting you off to your destination on time.

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

Departing on a Thursday is a good option for securing a great price. You can expect to save up to 25% when planning your travel around this day of the week.

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.

$65+ Flights from New York LaGuardia Airport, NY to Washington, D.C. Dulles Intl Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from LaGuardia to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from LaGuardia to Dulles Intl

Round-trip from	$129 (United Airlines)
One-way from	$65 (United Airlines)
Popular in	November
Cheapest in	April
Average price	$362
Good round-trip deal	$388 or less
Good one-way deal	$248 or less

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 ($34 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 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

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 July 28, 2025.

Thu 9/46:00 amLGA - IAD

Nonstop1h 30mUnited Airlines

Sun 9/710:08 pmIAD - LGA

Nonstop1h 22mUnited Airlines

Deal found 7/28

$129

Wed 8/2010:00 pmLGA - IAD

1 stop11h 27mFrontier

Sat 8/2312:57 pmIAD - LGA

1 stop8h 02mFrontier

Deal found 7/27

$178

Tue 9/97:40 amLGA - IAD

1 stop6h 11mAmerican Airlines

Tue 9/1611:18 amIAD - LGA

1 stop6h 02mAmerican Airlines

Deal found 7/26

$255

Best flights from LaGuardia to Dulles Intl
Discover carefully curated flight deals from LaGuardia to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2025.

Thu 9/46:00 amLGA - IAD

Nonstop1h 30mUnited Airlines

Sun 9/710:08 pmIAD - LGA

Nonstop1h 22mUnited Airlines

Deal found 7/28

$129

Wed 8/2010:00 pmLGA - IAD

1 stop11h 27mFrontier

Sat 8/2312:57 pmIAD - LGA

1 stop8h 02mFrontier

Deal found 7/27

$178

Tue 9/97:40 amLGA - IAD

1 stop6h 11mAmerican Airlines

Tue 9/1611:18 amIAD - LGA

1 stop6h 02mAmerican Airlines

Deal found 7/26

$255

Last-minute flights from LaGuardia to Dulles Intl
Discover last-minute flight deals from LaGuardia to Dulles Intl. Data last updated July 28, 2025 and is based on user searches.

Wed 8/65:15 pmLGA - IAD

1 stop5h 41mAmerican Airlines

Mon 8/117:25 pmIAD - LGA

1 stop4h 20mAmerican Airlines

Deal found 7/26

$302

Thu 8/710:00 pmLGA - IAD

1 stop12h 07mFrontier

Sat 8/94:07 pmIAD - LGA

1 stop7h 25mFrontier

Deal found 7/27

$188

Thu 8/76:00 amLGA - IAD

Nonstop1h 27mUnited Airlines

Sun 8/1010:15 pmIAD - LGA

Nonstop1h 24mUnited Airlines

Deal found 7/27

$237

Thu 8/73:13 pmLGA - IAD

3 stops23h 10mMultiple Airlines

Sun 8/1011:58 amIAD - LGA

2 stops11h 28mMultiple Airlines

Deal found 7/26

$394

Tue 8/1211:00 amLGA - IAD

1 stop4h 19mAmerican Airlines

Sat 8/161:18 pmIAD - LGA

1 stop6h 59mAmerican Airlines

Deal found 7/26

$257

Tue 8/196:00 amLGA - IAD

Nonstop1h 30mUnited Airlines

Wed 8/2010:21 pmIAD - LGA

Nonstop1h 22mUnited Airlines

Deal found 7/27

$129

Wed 8/2010:00 pmLGA - IAD

1 stop11h 27mFrontier

Sat 8/2312:57 pmIAD - LGA

1 stop8h 02mFrontier

Deal found 7/27

$178

Sat 8/2310:59 amLGA - IAD

2 stops23h 45mMultiple Airlines

Sat 8/308:12 pmIAD - LGA

3 stops26h 10mMultiple Airlines

Deal found 7/26

$279

One-way flights from LaGuardia to Dulles Intl
Search for one-way flight options from LaGuardia to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated July 28, 2025.

Sun 8/246:00 amLGA - IAD

Nonstop1h 30mUnited Airlines

Deal found 7/27

$65

Sat 10/1112:59 pmLGA - IAD

1 stop6h 34mFrontier

Deal found 7/28

$83

Wed 9/310:59 amLGA - IAD

3 stops24h 24mMultiple Airlines

Deal found 7/26

$130

Mon 8/115:15 pmLGA - IAD

1 stop5h 41mAmerican Airlines

Deal found 7/26

$169

Cheapflights Fare Finder

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

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Thu 9/4

6:00 am-7:30 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 9/7

10:08 pm-11:30 pm

Nonstop1h 22m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 8/20

10:00 pm-9:27 am

1 stop11h 27m

Washington, D.C. Dulles Intl

Sat 8/23

12:57 pm-8:59 pm

1 stop8h 02m

$178

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Tue 9/9

7:40 am-1:51 pm

1 stop6h 11m

Washington, D.C. Dulles Intl

Tue 9/16

11:18 am-5:20 pm

1 stop6h 02m

$255

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sun 8/31

6:00 am-7:30 am

Nonstop1h 30m

$65

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 10/11

12:59 pm-7:33 pm

1 stop6h 34m

$83

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 9/3

10:59 am-11:23 am

3 stops24h 24m

$130

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Mon 8/11

5:15 pm-10:56 pm

1 stop5h 41m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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

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.

IAD

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

Our travel experts

Brandon Schultz

Expert on LGA

Ramsey Qubein

Expert on IAD

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 $309). 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?

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?

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

Weekly flight availability from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport

The most flights from LGA to IAD are scheduled on a Friday (9 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with United Airlines, American Airlines, and Frontier 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

8,892 reviews

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

8,892 reviews

United Airlines

7.4

Good

8,892 reviews

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

American Airlines

7.2

Good

10,000 reviews

United Airlines

7.4

Good

8,892 reviews

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

Frontier

5.9

Fair

3,238 reviews

United Airlines

7.4

Good

8,892 reviews

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

What are the cheapest airlines flying 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.Alternate airlines to your destination round-trip include Frontier and American Airlines. United Airlines is currently priced 55% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport one-way?
$65 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Frontier and American Airlines, with prices starting from $83 and $169, respectively.
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 (80%), Avianca (77%) or Mesa Airlines (70%) 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 $133. On average you can expect to pay $1,236. 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, 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 $309). 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

Woodbridge

Arlington

Alexandria

Tysons

Silver Spring

Fredericksburg

Gaithersburg

Easton

Towson

Linthicum Heights

Fairfax

Manassas

Falls Church

Waldorf

Laurel

Rockville

Oxon Hill

Springfield

National Harbor

Dundalk

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from LaGuardia to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$146	Average$306	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from LaGuardia to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from LaGuardia to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from LaGuardia to Dulles Intl

Cheapest flights from LaGuardia to Dulles IntlExplore 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 July 28, 2025.

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 July 28, 2025.

Cheapflights Fare Finder

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.

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

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

IAD

Our travel experts

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.

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?

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 July 28, 2025.

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 July 27, 2025.

Weekly flight availability from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from LaGuardia to Dulles Intl. 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 July 28, 2025.

Reviews of airlines servicing Dulles Intl

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.

What are the cheapest airlines flying from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport round-trip?

What are the cheapest airlines to fly from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport one-way?

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for LaGuardia to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from LaGuardia to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

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 July 28, 2025.