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Cheap flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro from $290

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Rio de Janeiro departing on 12/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro

Cheap round-trip flights

Air Canada Logo
9:45 am - 2:20 pmIAD-SDU
26h 35m2 stops
Air Canada Logo
11:25 am - 8:29 pmSDU-IAD
35h 04m2 stops
$629Air Canada
Find Deal
Sun, Feb 15 - Tue, Feb 24
Multiple Airlines Logo
5:45 am - 2:20 pmIAD-SDU
31h 35m3 stops
Multiple Airlines Logo
11:30 am - 5:35 amSDU-IAD
19h 05m2 stops
$652Multiple Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
Multiple Airlines Logo
5:45 am - 7:55 amIAD-SDU
24h 10m2 stops
Multiple Airlines Logo
8:50 am - 4:25 amSDU-IAD
21h 35m2 stops
$661Multiple Airlines
Find Deal
Fri, Nov 28 - Thu, Dec 4
LATAM Airlines Logo
4:00 pm - 1:15 pmIAD-SDU
19h 15m2 stops
LATAM Airlines Logo
8:05 pm - 2:51 pmSDU-IAD
20h 46m2 stops
$695LATAM Airlines
Find Deal
Sun, Feb 15 - Fri, Feb 20
Multiple Airlines Logo
5:45 am - 7:35 amIAD-SDU
24h 50m3 stops
Multiple Airlines Logo
8:10 am - 5:25 amSDU-IAD
22h 15m2 stops
$697Multiple Airlines
Find Deal
Mon, Oct 20 - Tue, Oct 28
Air Canada Logo
9:45 am - 4:50 pmIAD-SDU
30h 05m2 stops
Air Canada Logo
1:45 pm - 8:54 pmSDU-IAD
33h 09m2 stops
$698Air Canada
Find Deal
Tue, Oct 28 - Mon, Nov 3
LATAM Airlines Logo
5:25 pm - 1:15 pmIAD-SDU
17h 50m2 stops
LATAM Airlines Logo
8:05 pm - 11:53 amSDU-IAD
16h 48m2 stops
$738LATAM Airlines
Find Deal
Tue, Mar 3 - Mon, Mar 9
United Airlines Logo
10:35 pm - 2:20 pmIAD-SDU
14h 45m1 stop
United Airlines Logo
2:50 pm - 6:40 amSDU-IAD
16h 50m1 stop
$745United Airlines
Find Deal
Mon, Oct 13 - Sun, Oct 26
United Airlines Logo
6:50 pm - 2:20 pmIAD-SDU
18h 30m2 stops
United Airlines Logo
1:45 pm - 6:40 amSDU-IAD
17h 55m1 stop
$750United Airlines
Find Deal
Mon, Oct 20 - Tue, Oct 28
GOL Logo
3:20 pm - 10:20 pmIAD-SDU
30h 00m2 stops
GOL Logo
8:30 pm - 2:00 pmSDU-IAD
42h 30m2 stops
$814GOL
Find Deal
Wed, Oct 1 - Sat, Oct 11

LATAM Airlines flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport

Our best LATAM Airlines deals on Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport flight tickets
LATAM Airlines
Feb 15
IAD4:00 pmWashington, D.C. Dulles Intl
19h 15m
2 stops
SDU1:15 pmRio de Janeiro Santos Dumont
Feb 20
SDU8:05 pmRio de Janeiro Santos Dumont
20h 46m
2 stops
IAD2:51 pmWashington, D.C. Dulles Intl
$695
Find similar
LATAM Airlines
Mar 3
IAD5:25 pmWashington, D.C. Dulles Intl
17h 50m
2 stops
SDU1:15 pmRio de Janeiro Santos Dumont
Mar 9
SDU8:05 pmRio de Janeiro Santos Dumont
16h 48m
2 stops
IAD11:53 amWashington, D.C. Dulles Intl
$738
Find similar
LATAM Airlines
Mar 3
IAD5:25 pmWashington, D.C. Dulles Intl
17h 50m
2 stops
SDU1:15 pmRio de Janeiro Santos Dumont
Mar 14
SDU8:05 pmRio de Janeiro Santos Dumont
16h 48m
2 stops
IAD11:53 amWashington, D.C. Dulles Intl
$828
Find similar

United Airlines flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport flight tickets
United Airlines
Oct 13
IAD10:35 pmWashington, D.C. Dulles Intl
14h 45m
1 stop
SDU2:20 pmRio de Janeiro Santos Dumont
Oct 26
SDU2:50 pmRio de Janeiro Santos Dumont
16h 50m
1 stop
IAD6:40 amWashington, D.C. Dulles Intl
$745
Find similar
United Airlines
Oct 20
IAD6:50 pmWashington, D.C. Dulles Intl
18h 30m
2 stops
SDU2:20 pmRio de Janeiro Santos Dumont
Oct 28
SDU1:45 pmRio de Janeiro Santos Dumont
17h 55m
1 stop
IAD6:40 amWashington, D.C. Dulles Intl
$750
Find similar
United Airlines
Oct 13
IAD10:35 pmWashington, D.C. Dulles Intl
14h 45m
1 stop
SDU2:20 pmRio de Janeiro Santos Dumont
Oct 26
SDU2:50 pmRio de Janeiro Santos Dumont
21h 59m
2 stops
IAD11:49 amWashington, D.C. Dulles Intl
$755
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport 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, momondo users made 832,500 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Sun 2/15

9:45 am-2:20 pm

2 stops26h 35m

Rio de Janeiro Santos Dumont

Tue 2/24

11:25 am-8:29 pm

2 stops35h 04m

$629

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Tue 10/14

5:45 am-2:20 pm

3 stops31h 35m

Rio de Janeiro Santos Dumont

Tue 10/21

11:30 am-5:35 am

2 stops19h 05m

$652

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Fri 11/28

5:45 am-7:55 am

2 stops24h 10m

Rio de Janeiro Santos Dumont

Thu 12/4

8:50 am-4:25 am

2 stops21h 35m

$661

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Sun 2/15

4:00 pm-1:15 pm

2 stops19h 15m

Rio de Janeiro Santos Dumont

Fri 2/20

8:05 pm-2:51 pm

2 stops20h 46m

$695

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Mon 10/20

5:45 am-7:35 am

3 stops24h 50m

Rio de Janeiro Santos Dumont

Tue 10/28

8:10 am-5:25 am

2 stops22h 15m

$697

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Tue 10/28

9:45 am-4:50 pm

2 stops30h 05m

Rio de Janeiro Santos Dumont

Mon 11/3

1:45 pm-8:54 pm

2 stops33h 09m

$698

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Tue 3/3

5:25 pm-1:15 pm

2 stops17h 50m

Rio de Janeiro Santos Dumont

Mon 3/9

8:05 pm-11:53 am

2 stops16h 48m

$738

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Mon 10/13

10:35 pm-2:20 pm

1 stop14h 45m

Rio de Janeiro Santos Dumont

Sun 10/26

2:50 pm-6:40 am

1 stop16h 50m

$745

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Mon 10/20

6:50 pm-2:20 pm

2 stops18h 30m

Rio de Janeiro Santos Dumont

Tue 10/28

1:45 pm-6:40 am

1 stop17h 55m

$750

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Wed 10/1

3:20 pm-10:20 pm

2 stops30h 00m

Rio de Janeiro Santos Dumont

Sat 10/11

8:30 pm-2:00 pm

2 stops42h 30m

$814

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Rio de Janeiro Santos Dumont Airport?

On average, the least expensive day to fly to Rio de Janeiro Santos Dumont Airport from Washington, D.C. Dulles Intl Airport is on a Sunday. momondo users have found tickets for Sunday departures for as low as $1,021. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,358.

What is the cheapest time of day to depart on your flight to Rio de Janeiro Santos Dumont Airport?

Flying to Rio de Janeiro Santos Dumont Airport from Washington, D.C. Dulles Intl Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $973 when looking at flights departing in the afternoon. Try not to purchase tickets at noon because they tend to be around $1,358. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport (IAD to SDU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport.
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  • How far is Washington, D.C. Dulles Intl to Rio de Janeiro Santos Dumont by plane?

    Washington, D.C. Dulles Intl and Rio de Janeiro Santos Dumont are 4811.5 mi apart from one another. In terms of flight time, this usually takes a little over 14h 45m.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport are updated daily.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Rio de Janeiro Santos Dumont Airport.

  • What documentation or ID do you need to fly to Rio de Janeiro Santos Dumont Airport?

    The travel and health documents required for your trip to Rio de Janeiro Santos Dumont Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Rio de Janeiro Santos Dumont Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Rio de Janeiro?

It is quick and easy to find Washington, D.C. to Rio de Janeiro flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Rio de Janeiro that suits you.

Can I find flights from Washington, D.C. to Rio de Janeiro with flexible booking policies on momondo?

momondo does allow users to show only those flights to Rio de Janeiro from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Rio de Janeiro?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Rio de Janeiro from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Rio de Janeiro right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Rio de Janeiro now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Rio de Janeiro and let you know when they change.

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