What is the cheapest month to book a flight from Shannon, Clare to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Shannon, Clare to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Shannon, Clare to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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 SNN to IAD?

When flying from Shannon, Clare to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Shannon to Washington, D.C. Dulles Intl?

Most people fly from Shannon (SNN) if they book a flight from Shannon to Washington, D.C. Dulles Intl. On average, Shannon has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. Shannon is conveniently located just 2.1 mi from Shannon’s city center.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Shannon 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.

$451+ Flights from Shannon to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Shannon to Dulles Intl

Round-trip from	$644 (American Airlines)
One-way from	$451 (Gurufare)

From Shannon to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Shannon to Washington, D.C. Dulles Intl

Search Deals

Find flight deals from Shannon to Dulles Intl

Cheapest flights from Shannon to Dulles Intl
Explore the most affordable flight options available from Shannon to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Tue 9/99:15 pmSNN - IAD

1 stop25h 15mAmerican Airlines

Tue 9/305:50 pmIAD - SNN

1 stop12h 30mAmerican Airlines

Deal found 6/12

$644

Wed 6/251:05 pmSNN - IAD

1 stop11h 45mDelta

Mon 7/78:31 pmIAD - SNN

1 stop9h 39mDelta

Deal found 6/10

$679

Thu 6/261:05 pmSNN - IAD

1 stop11h 45mKLM

Tue 7/112:13 pmIAD - SNN

1 stop17h 57mKLM

Deal found 6/12

$681

Tue 6/241:05 pmSNN - IAD

2 stops15h 09mMultiple Airlines

Wed 7/98:33 pmIAD - SNN

1 stop9h 37mMultiple Airlines

Deal found 6/10

$693

Wed 6/251:05 pmSNN - IAD

2 stops15h 09mAir France

Sat 7/58:30 pmIAD - SNN

1 stop9h 40mAir France

Deal found 6/10

$705

Fri 7/259:30 amSNN - IAD

1 stop13h 00mUnited Airlines

Fri 8/110:19 pmIAD - SNN

1 stop28h 11mUnited Airlines

Deal found 6/10

$792

Tue 6/247:40 amSNN - IAD

1 stop17h 30mAer Lingus

Tue 7/810:40 pmIAD - SNN

1 stop12h 30mAer Lingus

Deal found 6/10

$939

Wed 6/257:40 amSNN - IAD

2 stops18h 24mAir Canada

Mon 7/710:20 amIAD - SNN

2 stops20h 00mAir Canada

Deal found 6/10

$940

Best flights from Shannon to Dulles Intl
Discover carefully curated flight deals from Shannon to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Tue 9/99:15 pmSNN - IAD

1 stop25h 15mAmerican Airlines

Tue 9/305:50 pmIAD - SNN

1 stop12h 30mAmerican Airlines

Deal found 6/12

$644

Wed 6/251:05 pmSNN - IAD

1 stop11h 45mDelta

Mon 7/78:31 pmIAD - SNN

1 stop9h 39mDelta

Deal found 6/10

$679

Thu 6/261:05 pmSNN - IAD

1 stop11h 45mKLM

Tue 7/112:13 pmIAD - SNN

1 stop17h 57mKLM

Deal found 6/12

$681

Tue 6/241:05 pmSNN - IAD

2 stops15h 09mMultiple Airlines

Wed 7/98:33 pmIAD - SNN

1 stop9h 37mMultiple Airlines

Deal found 6/10

$693

Wed 6/251:05 pmSNN - IAD

2 stops15h 09mAir France

Sat 7/58:30 pmIAD - SNN

1 stop9h 40mAir France

Deal found 6/10

$705

Fri 7/259:30 amSNN - IAD

1 stop13h 00mUnited Airlines

Fri 8/110:19 pmIAD - SNN

1 stop28h 11mUnited Airlines

Deal found 6/10

$792

Tue 6/247:40 amSNN - IAD

1 stop17h 30mAer Lingus

Tue 7/810:40 pmIAD - SNN

1 stop12h 30mAer Lingus

Deal found 6/10

$939

Wed 6/257:40 amSNN - IAD

2 stops18h 24mAir Canada

Mon 7/710:20 amIAD - SNN

2 stops20h 00mAir Canada

Deal found 6/10

$940

Last-minute flights from Shannon to Dulles Intl
Discover last-minute flight deals from Shannon to Dulles Intl. Data last updated June 12, 2025 and is based on user searches.

Tue 6/241:05 pmSNN - IAD

2 stops15h 09mMultiple Airlines

Wed 7/98:33 pmIAD - SNN

1 stop9h 37mMultiple Airlines

Deal found 6/10

$693

Tue 6/247:40 amSNN - IAD

1 stop17h 30mAer Lingus

Tue 7/810:40 pmIAD - SNN

1 stop12h 30mAer Lingus

Deal found 6/10

$939

Wed 6/251:05 pmSNN - IAD

1 stop11h 45mDelta

Mon 7/78:31 pmIAD - SNN

1 stop9h 39mDelta

Deal found 6/10

$679

Wed 6/251:05 pmSNN - IAD

2 stops15h 09mAir France

Sat 7/58:30 pmIAD - SNN

1 stop9h 40mAir France

Deal found 6/10

$705

Wed 6/257:40 amSNN - IAD

2 stops18h 24mAir Canada

Mon 7/710:20 amIAD - SNN

2 stops20h 00mAir Canada

Deal found 6/10

$940

Thu 6/261:05 pmSNN - IAD

1 stop11h 45mKLM

Tue 7/112:13 pmIAD - SNN

1 stop17h 57mKLM

Deal found 6/12

$681

Fri 7/259:30 amSNN - IAD

1 stop13h 00mUnited Airlines

Fri 8/110:19 pmIAD - SNN

1 stop28h 11mUnited Airlines

Deal found 6/10

$792

One-way flights from Shannon to Dulles Intl
Search for one-way flight options from Shannon to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Sun 11/168:05 pmSNN - IAD

2 stops24h 30mAer Lingus

Deal found 6/11

$451

Mon 10/136:05 amSNN - IAD

3 stops42h 54mMultiple Airlines

Deal found 6/10

$476

Sat 6/285:30 pmSNN - IAD

1 stop29h 00mBritish Airways

Deal found 6/12

$865

Cheapflights Fare Finder

Use the filters below to find and compare flights from Shannon to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Tue 9/9

9:15 pm-5:30 pm

1 stop25h 15m

Washington, D.C. Dulles Intl

Tue 9/30

5:50 pm-11:20 am

1 stop12h 30m

$644

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Wed 6/25

1:05 pm-7:50 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Mon 7/7

8:31 pm-11:10 am

1 stop9h 39m

$679

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Thu 6/26

1:05 pm-7:50 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Tue 7/1

12:13 pm-11:10 am

1 stop17h 57m

$681

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Tue 6/24

1:05 pm-11:14 pm

2 stops15h 09m

Washington, D.C. Dulles Intl

Wed 7/9

8:33 pm-11:10 am

1 stop9h 37m

$693

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Wed 6/25

1:05 pm-11:14 pm

2 stops15h 09m

Washington, D.C. Dulles Intl

Sat 7/5

8:30 pm-11:10 am

1 stop9h 40m

$705

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Fri 7/25

9:30 am-5:30 pm

1 stop13h 00m

Washington, D.C. Dulles Intl

Fri 8/1

10:19 pm-7:30 am

1 stop28h 11m

$792

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Tue 6/24

7:40 am-8:10 pm

1 stop17h 30m

Washington, D.C. Dulles Intl

Tue 7/8

10:40 pm-4:10 pm

1 stop12h 30m

$939

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Wed 6/25

7:40 am-9:04 pm

2 stops18h 24m

Washington, D.C. Dulles Intl

Mon 7/7

10:20 am-11:20 am

2 stops20h 00m

$940

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Sun 11/16

8:05 pm-3:35 pm

2 stops24h 30m

$451

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

Mon 10/13

6:05 am-7:59 pm

3 stops42h 54m

$476

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 11 results

Best time to book a flight from Shannon to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Shannon 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 Shannon to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

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.

Temperature in Dulles Intl by month

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).

Reviews of airlines servicing Dulles Intl

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air France

7.5

Good

1,463 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly from for flights from Shannon to Washington, D.C. Dulles Intl?
Most people fly from Shannon (SNN) if they book a flight from Shannon to Washington, D.C. Dulles Intl. On average, Shannon has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. Shannon is conveniently located just 2.1 mi from Shannon’s city center.
Can I find deals for flights from Shannon to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Shannon to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Shannon to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Shannon to Dulles Intl.
Can I find deals for business class flights from Shannon to Dulles Intl?
Yes. Cheapflights offers flight deals from Shannon 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 Shannon, Clare to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Shannon, Clare to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Shannon, Clare to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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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$451+ Cheap flights from Shannon (SNN) 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Shannon 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 Shannon to Dulles Intl

Round-trip from

One-way from

Find flight deals from Shannon to Dulles Intl

Cheapest flights from Shannon to Dulles IntlExplore the most affordable flight options available from Shannon to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from Shannon to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Shannon to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Shannon to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Shannon with our price prediction graph.

Cheapflights Insights

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

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from Shannon 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 airport do you fly from for flights from Shannon to Washington, D.C. Dulles Intl?

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

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

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

What is the cheapest month to book a flight from Shannon, Clare to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Shannon?

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

Alternative routes for Shannon to Dulles Intl

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Cheapest flights from Shannon to Dulles Intl
Explore the most affordable flight options available from Shannon to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.