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Cheap flights from Ottawa to Buenos Aires from C$ 526

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — BUE
23 Aug — 30 Aug1
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 24 July 2026.

Thu 20/810:00 a.m.
YOW
-
EZE
2 stops21h 00m
United Airlines
Thu 27/89:00 p.m.
EZE
-
YOW
2 stops37h 11m
United Airlines
Deal found 23/7C$ 1,070
Thu 13/810:00 a.m.
YOW
-
EZE
2 stops21h 00m
United Airlines
Thu 27/89:00 p.m.
EZE
-
YOW
2 stops37h 56m
United Airlines
Deal found 20/7C$ 1,073
Mon 10/810:00 a.m.
YOW
-
EZE
2 stops45h 00m
United Airlines
Tue 18/89:00 p.m.
EZE
-
YOW
2 stops18h 17m
United Airlines
Deal found 19/7C$ 1,074
Wed 12/86:00 a.m.
YOW
-
EZE
2 stops25h 00m
United Airlines
Wed 19/89:00 p.m.
EZE
-
YOW
2 stops26h 35m
United Airlines
Deal found 18/7C$ 1,091
Fri 25/96:01 p.m.
YOW
-
EZE
2 stops36h 59m
United Airlines
Tue 29/99:00 p.m.
EZE
-
YOW
2 stops20h 38m
United Airlines
Deal found 22/7C$ 1,150
Thu 19/1110:50 a.m.
YOW
-
EZE
2 stops26h 15m
Air Canada
Sat 5/124:45 p.m.
EZE
-
YOW
2 stops19h 02m
Air Canada
Deal found 19/7C$ 1,153
Sat 5/97:30 p.m.
YOW
-
EZE
2 stops35h 30m
United Airlines
Sat 12/99:00 p.m.
EZE
-
YOW
2 stops37h 56m
United Airlines
Deal found 22/7C$ 1,181
Thu 26/1110:50 a.m.
YOW
-
EZE
2 stops26h 15m
Air Canada
Mon 14/124:45 p.m.
EZE
-
YOW
3 stops23h 27m
Air Canada
Deal found 23/7C$ 1,212
Thu 19/118:30 p.m.
YOW
-
AEP
2 stops19h 00m
Multiple Airlines
Sat 5/125:10 p.m.
AEP
-
YOW
2 stops28h 20m
Multiple Airlines
Deal found 19/7C$ 1,284
Thu 26/118:30 p.m.
YOW
-
AEP
2 stops19h 00m
Multiple Airlines
Mon 14/124:40 p.m.
AEP
-
YOW
2 stops18h 35m
Multiple Airlines
Deal found 23/7C$ 1,298
Fri 16/106:50 a.m.
YOW
-
AEP
3 stops35h 50m
Multiple Airlines
Fri 23/1011:55 a.m.
AEP
-
YOW
3 stops30h 40m
Multiple Airlines
Deal found 19/7C$ 1,401
Thu 5/118:30 p.m.
YOW
-
AEP
2 stops19h 00m
Multiple Airlines
Sun 29/111:35 p.m.
AEP
-
YOW
2 stops21h 40m
Multiple Airlines
Deal found 19/7C$ 1,506

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 24 July 2026.

Round-trip from

C$ 1,070

One-way from

C$ 526

Popular in

December

Cheapest in

October

Average price

C$ 1,225
United Airlines
  • United Airlines
  • 20/8-27/8
  • 4 total stops
  • 58h 11m total
  • Ottawa to Buenos Aires
Search Deals
29/9
  • 29/9
  • 3 total stops
  • 28h 40m total
  • Ottawa to Buenos Aires
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 228 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 24 July 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 20/8

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

2 stops21h 00m

Buenos Aires Ministro Pistarini

Thu 27/8

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

2 stops37h 11m

C$ 1,070

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Thu 26/11

9:45 a.m.-7:20 a.m.

2 stops43h 35m

Buenos Aires Ministro Pistarini

Mon 14/12

10:05 p.m.-3:07 p.m.

2 stops19h 02m

C$ 1,070

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Tue 18/8

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

2 stops35h 30m

Buenos Aires Ministro Pistarini

Tue 25/8

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

2 stops18h 17m

C$ 1,073

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Thu 13/8

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

2 stops21h 00m

Buenos Aires Ministro Pistarini

Thu 27/8

9:00 p.m.-9:56 a.m.

2 stops37h 56m

C$ 1,073

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mon 10/8

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

2 stops45h 00m

Buenos Aires Ministro Pistarini

Tue 18/8

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

2 stops18h 17m

C$ 1,074

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 12/8

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

2 stops25h 00m

Buenos Aires Ministro Pistarini

Wed 19/8

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

2 stops26h 35m

C$ 1,091

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Fri 25/9

6:01 p.m.-8:00 a.m.

2 stops36h 59m

Buenos Aires Ministro Pistarini

Tue 29/9

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

2 stops20h 38m

C$ 1,150

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Thu 19/11

10:50 a.m.-3:05 p.m.

2 stops26h 15m

Buenos Aires Ministro Pistarini

Sat 5/12

4:45 p.m.-9:47 a.m.

2 stops19h 02m

C$ 1,153

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sat 5/9

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

2 stops35h 30m

Buenos Aires Ministro Pistarini

Sat 12/9

9:00 p.m.-9:56 a.m.

2 stops37h 56m

C$ 1,181

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Thu 19/11

8:30 p.m.-5:30 p.m.

2 stops19h 00m

Buenos Aires Jorge Newbery

Sat 5/12

5:10 p.m.-7:30 p.m.

2 stops28h 20m

C$ 1,284

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/7

Showing 1-10 of 26 resultsSorted by cheapest first
1
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, October is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 1,142). Flying from Ottawa to Buenos Aires in December is currently the most expensive (average of C$ 1,899). 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.

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 24 July 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
10,029 reviews
Check prices

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

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
10,029 reviews
United Airlines
7.4
Good
10,029 reviews
Check prices

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

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
11,381 reviews
United Airlines
7.4
Good
10,029 reviews
Check prices

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

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 fly from Ottawa to Buenos Aires in about 21h. The time it takes to get you to your destination can typically vary by up to . The distance from Ottawa to Buenos Aires is about 9070 km.

  • 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$ 1,082. United Airlines is currently priced 22% 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, October is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 1,142). Flying from Ottawa to Buenos Aires in December is currently the most expensive (average of C$ 1,899). 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 24 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 1,082AverageC$ 1,276FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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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