In terms of precipitation, rainfall in London Southend Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Southend Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to London Southend 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to London Southend Airport?

Users have found that booking a flight from Washington, D.C. Dulles Intl Airport to London Southend Airport at least 48 days early can save you up to 37% on average compared to booking a flight this week. If booking 48 days before your flight isn’t an option for you, users have found flights from Washington, D.C. Dulles Intl Airport to London Southend Airport for as little as $802 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $933 for flights departing within the next 3 days.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to London Southend Airport?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to London Southend Airport. Flights to London Southend Airport from Washington, D.C. Dulles Intl Airport in January are about $741 on average during January, but can be found for as low as $385.

What is the cheapest time of day to fly from IAD to SEN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to London Southend Airport as you normally would.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Dulles Intl to Southend by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$323+ Flights from Washington, D.C. Dulles Intl Airport to London Southend Airport

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Cheap flight deals from Dulles Intl to Southend

Popular in	June
Cheapest in	January
Average price	$848

Highest demand for flights based on searches. 12% potential increase in price ($110 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Cheapest flights from Dulles Intl to Southend
Explore the most affordable flight options available from Dulles Intl to Southend. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Tue 7/811:15 pmIAD - SEN

2 stops15h 25mMultiple Airlines

Tue 7/157:00 amSEN - IAD

3 stops37h 20mMultiple Airlines

Deal found 7/1

$1,125

Last-minute flights from Dulles Intl to Southend
Discover last-minute flight deals from Dulles Intl to Southend. Data last updated July 3, 2025 and is based on user searches.

Tue 7/811:15 pmIAD - SEN

2 stops15h 25mMultiple Airlines

Tue 7/157:00 amSEN - IAD

3 stops37h 20mMultiple Airlines

Deal found 7/1

$1,125

One-way flights from Dulles Intl to Southend
Search for one-way flight options from Dulles Intl to Southend. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Sun 7/2010:20 pmIAD - SEN

3 stops34h 10mMultiple Airlines

Deal found 7/1

$323

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Tue 7/8

11:15 pm-7:40 pm

2 stops15h 25m

London Southend

Tue 7/15

7:00 am-3:20 pm

3 stops37h 20m

$1,125

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Sun 7/20

10:20 pm-1:30 pm

3 stops34h 10m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Best time to book a flight from Dulles Intl to Southend

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

Related info for your journey

Can I find deals for flights from Dulles Intl to Southend that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Southend flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Southend?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Southend.
Can I find deals for business class flights from Dulles Intl to Southend?
Yes. Cheapflights offers flight deals from Dulles Intl to Southend by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$323+ Cheap flights from Dulles Intl (IAD) to Southend (SEN)

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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Southend with Cheapflights

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Cheap flight deals from Dulles Intl to Southend

Popular in

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Find flight deals from Dulles Intl to Southend

Cheapest flights from Dulles Intl to SouthendExplore the most affordable flight options available from Dulles Intl to Southend. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Explore the most affordable flight options available from Dulles Intl to Southend. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Dulles Intl to Southend

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

Related info for your journey

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

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

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

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

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Cheapest flights from Dulles Intl to Southend
Explore the most affordable flight options available from Dulles Intl to Southend. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.