IAD - MDZ

$718 Find Cheap Flights from Washington, D.C. to Mendoza

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Mendoza departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Mendoza

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Mendoza, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Mendoza, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$718
Copa Airlines
Thu 12/4Wed 12/17
IAD - MDZ • 1 stop
Cheapest one-way
Multiple Airlines
Wed 11/5
IAD - MDZ • multi-stop
Top airlines
Copa Airlines
Cheapest • from $718 (round-trip)
Copa Airlines
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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Flight Deals

Cheap Flights from Washington, D.C. to Mendoza (IAD-MDZ)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Mendoza that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Mendoza

Thu, Dec 4 - Wed, Dec 17
Copa Airlines Logo
8:22 am - 12:14 amIAD-MDZ
13h 52m1 stop
Copa Airlines Logo
1:17 am - 2:02 pmMDZ-IAD
14h 45m1 stop
$718Copa Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 18
LATAM Airlines Logo
7:59 pm - 6:40 pmIAD-MDZ
44h 41m2 stops
LATAM Airlines Logo
7:50 am - 11:35 amMDZ-IAD
29h 45m2 stops
$748LATAM Airlines
Find Deal
Sun, Dec 7 - Sat, Jan 17
LATAM Airlines Logo
12:19 pm - 9:20 amIAD-MDZ
19h 01m2 stops
LATAM Airlines Logo
7:50 am - 11:37 pmMDZ-IAD
17h 47m2 stops
$813LATAM Airlines
Find Deal
Sun, Dec 7 - Sat, Jan 17
LATAM Airlines Logo
12:19 pm - 9:20 amIAD-MDZ
19h 01m2 stops
LATAM Airlines Logo
7:50 am - 11:37 pmMDZ-IAD
17h 47m2 stops
$918LATAM Airlines
Find Deal
Fri, Dec 12 - Sat, Dec 20
Multiple Airlines Logo
8:22 am - 12:14 amIAD-MDZ
13h 52m1 stop
Multiple Airlines Logo
9:00 pm - 11:33 pmMDZ-IAD
28h 33m2 stops
$1,035Multiple Airlines
Find Deal
Sat, Dec 13 - Sat, Dec 20
LATAM Airlines Logo
7:59 pm - 9:20 amIAD-MDZ
35h 21m2 stops
LATAM Airlines Logo
7:50 am - 4:48 pmMDZ-IAD
34h 58m2 stops
$1,046LATAM Airlines
Find Deal
Sat, Dec 13 - Sat, Dec 20
LATAM Airlines Logo
7:59 pm - 9:20 amIAD-MDZ
35h 21m2 stops
LATAM Airlines Logo
7:45 pm - 4:48 pmMDZ-IAD
23h 03m2 stops
$1,059LATAM Airlines
Find Deal
Fri, Jan 2 - Tue, Jan 6
Copa Airlines Logo
5:25 am - 12:16 amIAD-MDZ
16h 51m1 stop
Copa Airlines Logo
1:27 am - 1:58 pmMDZ-IAD
14h 31m1 stop
$1,204Copa Airlines
Find Deal
Fri, Dec 12 - Sat, Dec 20
American Airlines Logo
6:00 am - 4:15 pmIAD-MDZ
32h 15m2 stops
American Airlines Logo
5:00 pm - 3:59 pmMDZ-IAD
24h 59m3 stops
$2,426American Airlines
Find Deal
Fri, Dec 12 - Sat, Dec 20
American Airlines Logo
11:25 am - 4:15 pmIAD-MDZ
26h 50m3 stops
American Airlines Logo
5:00 pm - 5:17 pmMDZ-IAD
26h 17m2 stops
$2,584American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Mendoza flights

Get data-powered insights and trends into flights from Washington, D.C. to Mendoza to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington, D.C. to Mendoza?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to Mendoza were found on Copa Airlines ($718) and LATAM Airlines ($748).

Which airlines fly non-stop between Washington, D.C. Dulles Intl Airport and Mendoza?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Washington, D.C. Dulles Intl Airport to Mendoza.

There are 2 airlines that fly nonstop from Washington, D.C. Dulles Intl Airport to Mendoza. They are Copa Airlines and LATAM Airlines. The cheapest airline for this route is LATAM Airlines, with the best round-trip deal found costing $669. On average, the best prices for this route can be found at LATAM Airlines.

Good to know

Cheapest flight$718
Flight from Washington, D.C. to Mendoza

When to book flights from Washington, D.C. to Mendoza

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Mendoza based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington, D.C. to Mendoza flights

  • What are the most common layover cities for flights from Washington, D.C. to Mendoza?

    Flights from Washington, DC to Mendoza include at least a single layover. Most flights include at least two layovers, with Copa Airlines offering the only single-layover flights from IAD to MDZ. The most common layover city is Panama City (PTY).

  • Which airlines offer kid-friendly amenities on flights from Washington, D.C. to Mendoza?

    When flying from IAS to MDZ with kids, consider booking your flight with Copa Airlines. Copa Airlines offers various family-friendly amenities. Families can benefit from priority boarding onboard, allowing them to settle in and organize their belongings. The airline provides bassinets for infants on a first-come, first-served basis and special children's meals catering to different dietary needs. Copa Airlines also offers a range of in-flight entertainment options, including movies, TV shows, and games suitable for all ages.

  • Can a minor fly alone from Washington, D.C. to Mendoza?

    United Airlines allows minors to fly unaccompanied from IAD to MDZ. The child must be between 5 and 14 years old to travel alone. Parents or guardians must make a reservation for the unaccompanied minor service and provide necessary information such as the child's full name, age, contact details, and the name, address, and phone number of the person picking them up at the destination. At check-in, the parent or guardian must present a valid government-issued photo ID, provide their contact information, and complete the required paperwork.

  • Are pets allowed on flights from Washington, D.C. to Mendoza?

    Copa Airlines allows small pets to travel in-cabin with their owners. The pet must be transported in an IATA-approved pet carrier that fits under the seat in front of you. The carrier dimensions must not exceed 17.5 × 12 x 8 inches. The combined weight of the pet and carrier should not exceed 22 lbs. Only dogs and cats are accepted as in-cabin pets on Copa Airlines flights.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Mendoza?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Mendoza was $718 for a round-trip ticket.

  • Do I need a passport to fly between Washington, D.C. and Mendoza?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Mendoza?

    When flying out of Washington, D.C. you will be using Washington, D.C. Dulles Intl. You will be landing at Mendoza, also known as Mendoza El Plumerillo.

  • Which aircraft models fly most regularly from Washington, D.C. to Mendoza?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Mendoza?

    Star Alliance is the only airline alliance operating flights between Washington, D.C. and Mendoza.

  • Which is the best airline for flights from Washington, D.C. to Mendoza, Copa Airlines or LATAM Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Mendoza are Copa Airlines and LATAM Airlines. With an average price for the route of $1,837 and an overall rating of 7.6, Copa Airlines is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $887 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Mendoza?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Mendoza.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Mendoza?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Mendoza from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Mendoza?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Mendoza with an airline and back to Washington, D.C. with another airline. Booking your flights between Washington, D.C. and MDZ can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Mendoza?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Mendoza from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Mendoza

  • Washington Dulles International Airport (IAD) provides accessible services to passengers with limited mobility. These services include wheelchair assistance and accessible restrooms throughout the airport. Additionally, IAD provides visual and auditory aids for individuals with visual or hearing impairments.
  • Public transport is available from Mendoza Airport (MDZ) to Downtown Mendoza. The city center is conveniently connected to the airport through bus route 60, accessed from the main access area. Taxis are also available curbside.
  • Copa Airlines, LATAM, United, and Avianca offer business class flights from IAD to MDZ. In business class, you can enjoy enhanced comfort with spacious seating, priority boarding, and access to airport lounges. Gourmet meals, fine wines, entertainment systems, and amenity kits are provided to ensure a premium travel experience.
  • US citizens traveling to Mendoza, Argentina, will need a valid passport to enter the country. However, US citizens are not required to obtain a visa for tourist visits of up to 90 days in Argentina.
  • When traveling on Copa Airlines from Washington Dulles International Airport (IAD) to Mendoza (MDZ), you are allowed to one in-cabin bag and a personal item. The maximum total dimensions for the in-cabin bag, including handles and wheels, should not exceed 46 linear inches. Additionally, the weight of the in-cabin bag must not exceed 22 lbs.

Reviews of the top airlines flying from Washington, D.C. to Mendoza

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Mendoza. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Mendoza? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
Copa AirlinesOverall score based on 1562 reviews
8.1Crew
7.4Comfort
6.9Food
6.8Entertainment
7.8Boarding
Airline reviews

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

6.0 GoodZach, Oct 2025DEN - PTY
Read more Copa Airlines reviews

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

Simply as follows:- First, there was no vegetarian option for the meal Second, only 2 washrooms for the entire economy class.

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

horrible service, food was an embarrassment, no charging for cellphones, stay away

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

Very happy with my flight. I would definitely recommend it.

Did upgrade, travel in business it was great (more room I could sleep)

Had to go through security at the gate again. Had to take off shoes and go through the whole thing again even though we have global entry. They asked us to check in items bought at duty free during our layover and since we checked our luggage at the original departure airport, they forced us to check in a small backpack. None of this ever happened with other airlines. In addition, no vegetarian food option and no snacks during a 7 hr flight. Luggage limits are unusually small. This is unacceptable. Will NEVER fly Copa again and will tell friends and family to avoid this airline.

Seats not reclining, no vegetarian food option, no snacks. 7.5 hr flight should have been more comfortable. Luggage limits are unusually small. Will never fly Copa again and will tell friends and family to avoid this airline.

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

Poor, the airline was not able to help me move flights.

we were missing our luggage, trying to find someone to have any empathy was pretty much not happening....

Really bad experience – delayed for 6 hours without any notice, no food or drinks provided, and stuck in the horrible Cartagena airport.

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

Because the flight was late, we lost the connection to Brazil. You, Delta delayed, and you Delta anticipated the door closing in 15 min from Miami to GRU. Why? It caused a lot of stress! I almost could not see my mother in law alive because of your delay.

Boarding was done by woman who insisted on strict standing in line policy; food was ok; entertainment minimal

Everything you need to know for your flight from Washington, D.C. to Mendoza

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