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Cheap flights from Ottawa to Buenos Aires from C$ 581

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — BUE
27 Apr — 4 Mai1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Buenos Aires
Explore the most affordable flight options available from Ottawa to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 März 2026.

Do 7/56:00 a.m.
YOW
-
EZE
2 stops49h 00m
United Airlines
Do 14/59:00 p.m.
EZE
-
YOW
2 stops46h 55m
United Airlines
Deal found 23/3C$ 1,209
Mo 1/66:00 a.m.
YOW
-
EZE
2 stops25h 00m
United Airlines
Fr 5/69:00 p.m.
EZE
-
YOW
2 stops18h 17m
United Airlines
Deal found 27/3C$ 1,227
Di 26/56:00 a.m.
YOW
-
EZE
2 stops25h 00m
United Airlines
So 7/69:00 p.m.
EZE
-
YOW
2 stops20h 38m
United Airlines
Deal found 26/3C$ 1,244
Mo 25/57:30 p.m.
YOW
-
EZE
2 stops35h 30m
United Airlines
So 31/59:00 p.m.
EZE
-
YOW
2 stops51h 54m
United Airlines
Deal found 26/3C$ 1,253
Do 7/510:05 p.m.
YOW
-
EZE
2 stops39h 25m
Air Canada
Do 14/54:35 p.m.
EZE
-
YOW
2 stops25h 36m
Air Canada
Deal found 23/3C$ 1,276
So 10/57:30 p.m.
YOW
-
EZE
2 stops35h 30m
United Airlines
So 17/59:00 p.m.
EZE
-
YOW
2 stops38h 03m
United Airlines
Deal found 28/3C$ 1,291
Mo 26/107:10 p.m.
YOW
-
AEP
2 stops17h 10m
Multiple Airlines
Di 15/121:45 p.m.
AEP
-
YOW
2 stops21h 33m
Multiple Airlines
Deal found 26/3C$ 1,449
Mo 6/45:55 p.m.
YOW
-
AEP
3 stops34h 45m
Multiple Airlines
Sa 11/45:45 a.m.
AEP
-
YOW
3 stops43h 40m
Multiple Airlines
Deal found 26/3C$ 1,495
Di 7/47:00 a.m.
YOW
-
AEP
2 stops24h 30m
Multiple Airlines
Sa 11/45:45 a.m.
AEP
-
YOW
3 stops43h 40m
Multiple Airlines
Deal found 26/3C$ 1,514
Di 7/47:00 a.m.
YOW
-
AEP
2 stops32h 00m
Multiple Airlines
Fr 10/45:27 a.m.
AEP
-
YOW
3 stops27h 49m
Multiple Airlines
Deal found 26/3C$ 1,561
Mo 25/56:00 p.m.
YOW
-
AEP
2 stops20h 40m
Multiple Airlines
So 31/51:30 p.m.
AEP
-
YOW
2 stops26h 41m
Multiple Airlines
Deal found 26/3C$ 1,615

Find flight deals from Ottawa to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 28 März 2026.

Round-trip from

C$ 1,209

One-way from

C$ 581

Popular in

June

Cheapest in

September

Average price

C$ 1,299
United Airlines
  • United Airlines
  • 7/5-14/5
  • 4 total stops
  • 95h 55m total
  • Ottawa to Buenos Aires
Search Deals
10/5
  • 10/5
  • 3 total stops
  • 25h 25m total
  • Ottawa to Buenos Aires
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 357 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 128 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Buenos Aires 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, Cheapflights users made 629,999 searches. Data last updated 28 März 2026.
Use the filters below to find and compare flights from Ottawa to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Do 7/5

6:00 a.m.-8:00 a.m.

2 stops49h 00m

Buenos Aires Ministro Pistarini

Do 14/5

9:00 p.m.-6:55 p.m.

2 stops46h 55m

C$ 1,209

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mo 1/6

6:00 a.m.-8:00 a.m.

2 stops25h 00m

Buenos Aires Ministro Pistarini

Fr 5/6

9:00 p.m.-2:17 p.m.

2 stops18h 17m

C$ 1,227

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Di 26/5

6:00 a.m.-8:00 a.m.

2 stops25h 00m

Buenos Aires Ministro Pistarini

So 7/6

9:00 p.m.-4:38 p.m.

2 stops20h 38m

C$ 1,244

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mo 25/5

7:30 p.m.-8:00 a.m.

2 stops35h 30m

Buenos Aires Ministro Pistarini

So 31/5

9:00 p.m.-11:54 p.m.

2 stops51h 54m

C$ 1,253

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Do 7/5

9:30 p.m.-2:30 p.m.

3 stops40h 00m

Buenos Aires Ministro Pistarini

Do 14/5

4:35 p.m.-12:46 a.m.

2 stops33h 11m

C$ 1,280

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

So 10/5

7:30 p.m.-8:00 a.m.

2 stops35h 30m

Buenos Aires Ministro Pistarini

So 17/5

9:00 p.m.-10:03 a.m.

2 stops38h 03m

C$ 1,291

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Di 7/4

5:45 a.m.-8:30 a.m.

3 stops25h 45m

Buenos Aires Jorge Newbery

Sa 11/4

9:35 a.m.-12:25 a.m.

3 stops39h 50m

C$ 1,549

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Mo 25/5

6:00 p.m.-3:40 p.m.

2 stops20h 40m

Buenos Aires Jorge Newbery

So 31/5

1:30 p.m.-3:11 p.m.

2 stops26h 41m

C$ 1,615

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Do 7/5

4:00 p.m.-5:20 p.m.

2 stops24h 20m

Buenos Aires Jorge Newbery

Do 14/5

1:40 p.m.-11:05 a.m.

2 stops22h 25m

C$ 1,728

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Do 7/5

2:30 p.m.-3:23 a.m.

2 stops35h 53m

Buenos Aires Ministro Pistarini

Do 14/5

11:25 p.m.-6:00 p.m.

1 stop19h 35m

C$ 2,006

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/3

Showing 1-10 of 27 resultsSorted by cheapest first
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Best time to book a flight from Ottawa to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Ottawa 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 Ottawa to Buenos Aires

What is the cheapest month to book a flight from Ottawa to Buenos Aires?

Currently, March is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 531). Flying from Ottawa to Buenos Aires in January is currently the most expensive (average of C$ 1,098). 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.

How much does it cost to fly round-trip from Ottawa to Buenos Aires?

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated 28 März 2026.
Read reviews from past customers who have flown United Airlines and Air Canada from Ottawa to Buenos Aires. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,499 reviews
Check prices

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,499 reviews
United Airlines
7.4
Good
9,499 reviews
Check prices

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Air Canada
7.1
Good
10,853 reviews
United Airlines
7.4
Good
9,499 reviews
Check prices

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Buenos Aires. 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 Ottawa to Buenos Aires?

    Most people fly from Ottawa (YOW) if they book a flight from Ottawa to Buenos Aires. On average, Ottawa has 0 outbound flights to Buenos Aires per day from 1 airline. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

  • How long is the flight from Ottawa to Buenos Aires?

    Airlines like United Airlines and Air Canada fly from Ottawa to Buenos Aires in about 24h 20m. The time it takes to get you to your destination can typically vary by up to 24h 40m. The distance from Ottawa to Buenos Aires is about 9045 km. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Ottawa to Buenos Aires round-trip?

    Cheapflights users have booked flights from Ottawa to Buenos Aires round-trip from C$ 594. United Airlines is currently priced 58% below the average price you’ll pay for this route.

  • Can I find deals for flights from Ottawa to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Ottawa to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Buenos Aires.

  • Can I find deals for business class flights from Ottawa to Buenos Aires?

    Yes. Cheapflights offers flight deals from Ottawa to Buenos Aires 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 Ottawa to Buenos Aires?

    Currently, March is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 531). Flying from Ottawa to Buenos Aires in January is currently the most expensive (average of C$ 1,098). 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Ottawa to Buenos Aires

Discover the top airline that operate flights from Ottawa to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 28 März 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 594AverageC$ 1,267FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ottawa to Buenos Aires?

Cheapflights helps you search for flights from Ottawa to Buenos Aires via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Buenos Aires?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Buenos Aires for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ottawa to Buenos Aires with no change fees?

Yes! Cheapflights helps users easily find flights from Ottawa to Buenos Aires with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to Buenos Aires become cheaper?

Not ready to book yet? You can track prices for flights from Ottawa to Buenos Aires on Cheapflights with our Price Alert feature and get notified when better prices are available.

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