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Cheap Flights from Washington Dulles to San Diego International

Compare Washington Dulles to San Diego International flight deals

Find the cheapest month or even day of the year to fly to San Diego International

Book the best San Diego International fare with no extra fees

Flight deals from Washington Dulles to San Diego International

Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to San Diego International Airport? If you want to travel next month, return fares start from R 2,776. Find the lowest prices on one-way and return tickets right here.
San Diego.R 1,222 per passenger.Departing Thu, 27 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Thu, 27 Aug, arriving in San Diego International.Price includes taxes and charges.From R 1,222, select.
San Diego.R 1,856 per passenger.Departing Wed, 2 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Wed, 2 Sep, arriving in San Diego International.Price includes taxes and charges.From R 1,856, select.
San Diego.R 2,411 per passenger.Departing Sat, 3 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Sat, 3 Oct, arriving in San Diego International.Price includes taxes and charges.From R 2,411, select.
San Diego.R 2,670 per passenger.Departing Tue, 17 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Tue, 17 Nov, arriving in San Diego International.Price includes taxes and charges.From R 2,670, select.
San Diego.R 2,862 per passenger.Departing Tue, 20 Oct.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Tue, 20 Oct, arriving in San Diego International.Price includes taxes and charges.From R 2,862, select.
San Diego.R 2,862 per passenger.Departing Tue, 15 Sep.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Tue, 15 Sep, arriving in San Diego International.Price includes taxes and charges.From R 2,862, select.
San Diego.R 2,862 per passenger.Departing Sat, 14 Nov.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 14 Nov, arriving in San Diego International.Price includes taxes and charges.From R 2,862, select.
San Diego.R 2,862 per passenger.Departing Tue, 25 Aug.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Tue, 25 Aug, arriving in San Diego International.Price includes taxes and charges.From R 2,862, select.
San Diego.R 3,111 per passenger.Departing Wed, 29 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Wed, 29 Jul, arriving in San Diego International.Price includes taxes and charges.From R 3,111, select.
San Diego.R 3,272 per passenger.Departing Wed, 16 Dec.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Wed, 16 Dec, arriving in San Diego International.Price includes taxes and charges.From R 3,272, select.
San Diego.R 3,356 per passenger.Departing Fri, 22 Jan.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Fri, 22 Jan, arriving in San Diego International.Price includes taxes and charges.From R 3,356, select.
San Diego.R 3,361 per passenger.Departing Thu, 1 Apr.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Thu, 1 Apr, arriving in San Diego International.Price includes taxes and charges.From R 3,361, select.
San Diego.R 3,361 per passenger.Departing Thu, 25 Mar.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Thu, 25 Mar, arriving in San Diego International.Price includes taxes and charges.From R 3,361, select.
San Diego.R 3,364 per passenger.Departing Sun, 30 May.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Sun, 30 May, arriving in San Diego International.Price includes taxes and charges.From R 3,364, select.
San Diego.R 3,364 per passenger.Departing Sat, 20 Feb.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Sat, 20 Feb, arriving in San Diego International.Price includes taxes and charges.From R 3,364, select.
San Diego.R 3,523 per passenger.Departing Fri, 1 Jan.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Fri, 1 Jan, arriving in San Diego International.Price includes taxes and charges.From R 3,523, select.

Find the cheapest month to fly from Washington Dulles to San Diego International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to San Diego International flights are currently cheapest in August.
Jul
from R 3,111
Aug
from R 1,222
Sep
from R 1,856
Oct
from R 2,411
Nov
from R 2,670
Dec
from R 3,272
Jan
from R 3,356
Feb
from R 3,364
Mar
from R 3,361
Apr
from R 3,361
May
from R 3,364
Jun
from R 3,533

Direct flights from Washington Dulles to San Diego International

Washington Dulles to San Diego International: Alternative routes

Compare routes from Washington Dulles to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier than San Diego International.

San Diego International

4km from central San Diego
ClosestCheapest
from R 1,222
Search flights

McClellan-Palomar

48km from central San Diego
from R 4,511
Search flights

Washington D.C. to San Diego: Flight information

The things to know before you go.
Cheapest flight foundR 1,222
Cheapest month to flyAugust
Average flight time5 hrs, 32 mins
Most popular airlineUnited
Average flights per week75

Finding cheap flights from Washington Dulles to San Diego International: Frequently asked questions

The best price we found for a return flight from Washington Dulles to San Diego International is R 2,776. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 32 minutes is the average flight time from Washington Dulles to San Diego International.
United, Qatar Airways and Alaska Airlines fly direct from Washington Dulles to San Diego International.
As of July 2026, there are 75 flights per week flying from Washington Dulles to San Diego International.
The cheapest month to fly from Washington Dulles to San Diego International is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to San Diego International Airport on Friday, 21 August 2026.
Yes – the average flight time is 5 hours and 32 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines and United offer the cheapest flight tickets to San Diego International.

Travelling from Washington Dulles Airport (IAD) to San Diego International Airport (SAN): what you need to know

  • Around 5 hours 35 minutes is how long you'll be travelling on a direct flight from Washington Dulles Airport to San Diego International Airport.

  • San Diego's timezone is UTC-8, making San Diego three hours behind Washington DC.

  • Take your pick of 27 weekly Washington Dulles Airport to San Diego International Airport flights. The 08:30 departure with United Airlines is the earliest you can take. United Airlines operates the latest service of the day at 18:20.

  • For a smooth journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to catch your IAD to SAN flight.

  • Travelling during a peak month such as July? Public holidays and other popular periods can result in longer lines at airport checkpoints. Play things extra safe and get there up to four hours ahead of international flights and two hours before a domestic departure.

  • United is your gateway to discovering San Diego (and perhaps some other exciting corners of the United States!). Check out the direct flights from Washington Dulles Airport to San Diego International Airport offered by this popular airline.

  • Most passengers choose to fly with United on this route.

  • With 78.23% of its services arriving as scheduled, United is the most punctual carrier operating IAD to SAN flights.

  • Consider adding a stopover when booking your ticket from Washington Dulles Airport to San Diego International Airport. Just uncheck 'Direct flights only' to break up your journey, or visit a new city along the way. Check out these options between IAD and SAN:

    • Atlanta Hartsfield-Jackson Airport

    • Denver International Airport

    • Los Angeles International Airport

How to find the cheapest flights from Washington Dulles Airport (IAD) to San Diego International Airport (SAN)

  • R 1,222 is currently the best price for a one-way Washington Dulles Airport to San Diego International Airport flight. A return flight starts from R 2,776. These fares can change depending on demand.

  • Book one month before travelling. After crunching the numbers on our calendar, this is how far you should book ahead to find cheap tickets from IAD to SAN.

  • The cheapest month for flights from Washington Dulles Airport to San Diego International Airport is June. Use the 'Whole month' tool to see the lowest airfares if you have flexible dates.

  • Stay on top of deals for cheap flights from IAD to SAN by setting up a Price Alert. You'll receive an email or push notification on the app when a special offer becomes available.

  • Select your ideal arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Washington Dulles Airport to San Diego International Airport.

Handy information about Washington Dulles Airport (IAD)

  • IAD is located at 1 Saarinen Circle.

  • 77% of flights that take off from Washington Dulles Airport make it to their destination on time.

  • Central Washington DC to Washington Dulles Airport is around 40 kilometres. Depending on traffic, it'll take about 45 minutes to get there if you're ride-sharing, catching a taxi or driving.

  • Planning to catch public transport? Expect a journey time of around 1 hour 10 minutes.

  • Get your travels off to a stress-free start by staying near IAD. Whether you're catching an early flight from Washington Dulles Airport to San Diego International Airport or just don't like being rushed, these hotels are ideal:

Arriving at San Diego International Airport (SAN)

  • If you're coming in on a late Washington Dulles Airport to San Diego International Airport flight, nothing beats the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and sleeping not long after at one of these accommodation options near SAN:

  • Go where the road takes you with a San Diego International Airport rental car. Pick up a set of wheels from Thrifty, Dollar or Budget and experience more of San Diego and beyond.

  • Lock in the best possible rate by booking your vehicle from San Diego International Airport about two weeks before your travel date.

When to fly to San Diego International Airport (SAN)

  • The quietest month for a flight from Washington Dulles Airport to San Diego International Airport is March, while August is the most popular. Pick the ideal time to go to San Diego based on whether you prefer a more fast-paced or easygoing experience.

  • When reserving your flight from Washington Dulles Airport to San Diego International Airport, think about the kind of weather you like. August is the warmest month in San Diego, with the temperature ranging from 16ºC (61ºF) to 27ºC (81ºF).

  • February has average temperatures of between 8ºC (46ºF) and 22ºC (72ºF). Look for cheap tickets from IAD to SAN around that time if you'd rather travel in cooler conditions.

Explore more of the United States

  • You've done San Diego, now it's time to explore more of the United States. Travel about 177 kilometres north-west to Los Angeles to tick off its top sights. From Hollywood Sign to Universal Studios Hollywood and Hollywood Bowl, you'll have a packed itinerary ahead.

  • Phoenix is another well-known destination in the United States and is around 483 kilometres east of San Diego. No journey is complete without visiting Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.

More travel options

Plan the rest of your trip from Washington D.C. to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.