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Cheap flights from Ottawa to Buenos Aires from C$ 557

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — BUE
15 Jun — 22 Jun1
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 16 May 2026.

Thu 27/86:05 a.m.
YOW
-
EZE
2 stops24h 55m
United Airlines
Mon 31/89:00 p.m.
EZE
-
YOW
2 stops26h 35m
United Airlines
Deal found 14/5C$ 994
Tue 2/66:00 a.m.
YOW
-
EZE
2 stops25h 00m
United Airlines
Mon 8/69:00 p.m.
EZE
-
YOW
2 stops27h 54m
United Airlines
Deal found 13/5C$ 1,130
Thu 6/83:10 p.m.
YOW
-
EZE
2 stops39h 50m
United Airlines
Tue 11/89:00 p.m.
EZE
-
YOW
2 stops18h 17m
United Airlines
Deal found 11/5C$ 1,192
Fri 26/66:05 a.m.
YOW
-
EZE
2 stops24h 55m
United Airlines
Fri 3/79:00 p.m.
EZE
-
YOW
2 stops37h 11m
United Airlines
Deal found 12/5C$ 1,233
Sat 28/118:50 a.m.
YOW
-
EZE
2 stops28h 20m
Air Canada
Wed 2/124:45 p.m.
EZE
-
YOW
2 stops25h 12m
Air Canada
Deal found 11/5C$ 1,270
Tue 2/66:10 p.m.
YOW
-
EZE
1 stop19h 20m
Air Canada
Mon 8/64:35 p.m.
EZE
-
YOW
2 stops19h 56m
Air Canada
Deal found 13/5C$ 1,276
Thu 27/89:30 p.m.
YOW
-
EZE
3 stops40h 00m
Air Canada
Mon 31/84:35 p.m.
EZE
-
YOW
2 stops29h 15m
Air Canada
Deal found 15/5C$ 1,325
Tue 2/66:55 a.m.
YOW
-
AEP
3 stops34h 25m
Multiple Airlines
Mon 8/64:40 a.m.
AEP
-
YOW
3 stops29h 35m
Multiple Airlines
Deal found 13/5C$ 1,375
Thu 6/86:55 a.m.
YOW
-
AEP
3 stops28h 15m
Multiple Airlines
Tue 11/85:27 a.m.
AEP
-
YOW
3 stops30h 48m
Multiple Airlines
Deal found 11/5C$ 1,514
Sat 13/66:10 p.m.
YOW
-
AEP
2 stops18h 10m
Multiple Airlines
Sun 21/61:30 p.m.
AEP
-
YOW
2 stops20h 45m
Multiple Airlines
Deal found 14/5C$ 1,603
Thu 27/810:00 a.m.
YOW
-
AEP
2 stops30h 20m
Air Canada
Mon 31/81:40 p.m.
AEP
-
YOW
2 stops22h 50m
Air Canada
Deal found 15/5C$ 1,721
Wed 2/1211:10 a.m.
YOW
-
AEP
2 stops28h 00m
Air Canada
Sun 6/121:35 p.m.
AEP
-
YOW
2 stops28h 22m
Air Canada
Deal found 12/5C$ 1,727

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 16 May 2026.

Round-trip from

C$ 994

One-way from

C$ 557

Popular in

July

Cheapest in

September

Average price

C$ 1,093
United Airlines
  • United Airlines
  • 27/8-31/8
  • 4 total stops
  • 51h 30m total
  • Ottawa to Buenos Aires
Search Deals
United Airlines
  • United Airlines
  • 11/6
  • 2 total stops
  • 25h 00m total
  • Ottawa to Buenos Aires
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (C$ 586 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (C$ 151 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 16 May 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

Thu 27/8

6:05 a.m.-8:00 a.m.

2 stops24h 55m

Buenos Aires Ministro Pistarini

Mon 31/8

9:00 p.m.-10:35 p.m.

2 stops26h 35m

C$ 994

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sat 13/6

6:05 a.m.-8:00 a.m.

2 stops24h 55m

Buenos Aires Ministro Pistarini

Sun 21/6

9:00 p.m.-10:05 p.m.

2 stops26h 05m

C$ 1,130

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Thu 6/8

3:10 p.m.-8:00 a.m.

2 stops39h 50m

Buenos Aires Ministro Pistarini

Tue 11/8

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

2 stops18h 17m

C$ 1,192

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Fri 26/6

6:05 a.m.-8:00 a.m.

2 stops24h 55m

Buenos Aires Ministro Pistarini

Fri 3/7

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

2 stops37h 11m

C$ 1,233

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Thu 6/8

6:55 a.m.-12:10 p.m.

3 stops28h 15m

Buenos Aires Jorge Newbery

Tue 11/8

5:27 a.m.-11:15 a.m.

3 stops30h 48m

C$ 1,514

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Sat 13/6

6:10 p.m.-1:20 p.m.

2 stops18h 10m

Buenos Aires Jorge Newbery

Sun 21/6

1:30 p.m.-9:15 a.m.

2 stops20h 45m

C$ 1,603

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sat 13/6

6:55 a.m.-4:10 a.m.

2 stops20h 15m

Buenos Aires Ministro Pistarini

Sat 20/6

2:30 a.m.-12:25 a.m.

3 stops22h 55m

C$ 1,636

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Thu 27/8

10:00 a.m.-5:20 p.m.

2 stops30h 20m

Buenos Aires Jorge Newbery

Mon 31/8

1:40 p.m.-11:30 a.m.

2 stops22h 50m

C$ 1,721
Quickest round-trip

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sun 28/6

10:15 p.m.-3:40 p.m.

2 stops16h 25m

Buenos Aires Ministro Pistarini

Sun 5/7

4:50 p.m.-11:15 a.m.

2 stops19h 25m

C$ 1,755

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Fri 26/6

7:00 a.m.-3:40 p.m.

3 stops31h 40m

Buenos Aires Ministro Pistarini

Fri 3/7

7:10 a.m.-12:50 a.m.

2 stops18h 40m

C$ 1,942

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/5

Showing 1-10 of 24 resultsSorted by cheapest first
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2
3

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, September is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 984). Flying from Ottawa to Buenos Aires in July is currently the most expensive (average of C$ 2,120). 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 16 May 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
9,726 reviews
Check prices

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

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
9,726 reviews
United Airlines
7.4
Good
9,726 reviews
Check prices

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

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
11,046 reviews
United Airlines
7.4
Good
9,726 reviews
Check prices

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

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 55m. The time it takes to get you to your destination can typically vary by up to 5h 25m. The distance from Ottawa to Buenos Aires is about 9070 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$ 589. 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, September is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 984). Flying from Ottawa to Buenos Aires in July is currently the most expensive (average of C$ 2,120). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 16 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 589AverageC$ 1,257FlexibilityNo 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.

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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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