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Cheap flights from Ottawa to Buenos Aires from C$ 543

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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — BUE
13 Feb — 20 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 14 January 2026.

Round-trip from

C$ 1,088

One-way from

C$ 543

Popular in

December

Cheapest in

September

Average price

C$ 1,440
United Airlines
  • United Airlines
  • 3/3-17/3
  • 4 total stops
  • 63h 57m total
  • Ottawa to Buenos Aires
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United Airlines
  • United Airlines
  • 15/3
  • 2 total stops
  • 35h 50m total
  • Ottawa to Buenos Aires
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 147 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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Find 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 14 January 2026.

Wed 28/19:45 a.m.
YOW
-
EZE
2 stops19h 35m
United Airlines
Wed 11/210:05 p.m.
EZE
-
YOW
2 stops20h 25m
United Airlines
Deal found 11/1C$ 1,111
Tue 31/38:00 p.m.
YOW
-
EZE
2 stops17h 30m
Air Canada
Wed 15/44:30 p.m.
EZE
-
YOW
2 stops18h 36m
Air Canada
Deal found 11/1C$ 1,126
Sun 8/27:27 p.m.
YOW
-
EZE
2 stops33h 53m
United Airlines
Tue 24/210:05 p.m.
EZE
-
YOW
2 stops20h 25m
United Airlines
Deal found 12/1C$ 1,133
Fri 3/48:05 p.m.
YOW
-
EZE
2 stops17h 25m
Air Canada
Sat 25/44:30 p.m.
EZE
-
YOW
2 stops34h 04m
Air Canada
Deal found 12/1C$ 1,134
Fri 3/47:25 p.m.
YOW
-
EZE
2 stops18h 05m
Air Canada
Thu 23/44:30 p.m.
EZE
-
YOW
2 stops18h 36m
Air Canada
Deal found 13/1C$ 1,136
Wed 28/18:25 p.m.
YOW
-
AEP
2 stops22h 55m
Multiple Airlines
Wed 11/25:10 p.m.
AEP
-
YOW
3 stops27h 28m
Multiple Airlines
Deal found 11/1C$ 1,534
Tue 31/38:00 p.m.
YOW
-
AEP
2 stops20h 20m
Air Canada
Wed 15/41:30 p.m.
AEP
-
YOW
2 stops21h 36m
Air Canada
Deal found 11/1C$ 1,637
Tue 24/35:45 a.m.
YOW
-
AEP
2 stops34h 35m
Air Canada
Thu 26/31:40 p.m.
AEP
-
YOW
2 stops32h 38m
Air Canada
Deal found 12/1C$ 1,646
Fri 3/47:25 p.m.
YOW
-
AEP
2 stops20h 55m
Air Canada
Sat 25/41:30 p.m.
AEP
-
YOW
2 stops22h 34m
Air Canada
Deal found 12/1C$ 1,649
Fri 16/16:20 p.m.
YOW
-
AEP
2 stops17h 20m
Multiple Airlines
Fri 23/17:00 a.m.
AEP
-
YOW
2 stops36h 41m
Multiple Airlines
Deal found 12/1C$ 2,042

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 14 January 2026.
Use the filters below to find and compare flights from Ottawa to Buenos Aires that are best for you.

Fly from

Ottawa

Fly to

Buenos Aires

Route

Depart

Return

Price

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Tue 31/3

6:20 p.m.-2:30 p.m.

2 stops19h 10m

Buenos Aires Ministro Pistarini

Wed 15/4

4:30 p.m.-10:06 a.m.

2 stops18h 36m

C$ 1,129

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Fri 3/4

7:25 p.m.-2:30 p.m.

2 stops18h 05m

Buenos Aires Ministro Pistarini

Thu 23/4

4:30 p.m.-10:06 a.m.

2 stops18h 36m

C$ 1,134

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Fri 3/4

6:05 p.m.-2:30 p.m.

2 stops19h 25m

Buenos Aires Ministro Pistarini

Sat 25/4

4:30 p.m.-11:04 a.m.

2 stops19h 34m

C$ 1,141

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Wed 28/1

8:25 p.m.-11:20 p.m.

3 stops24h 55m

Buenos Aires Jorge Newbery

Wed 11/2

5:10 p.m.-7:18 p.m.

3 stops28h 08m

C$ 1,534

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Tue 31/3

8:00 p.m.-5:20 p.m.

2 stops20h 20m

Buenos Aires Jorge Newbery

Wed 15/4

1:30 p.m.-10:06 a.m.

2 stops21h 36m

C$ 1,637

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Tue 24/3

5:45 a.m.-5:20 p.m.

2 stops34h 35m

Buenos Aires Jorge Newbery

Thu 26/3

1:40 p.m.-9:18 p.m.

2 stops32h 38m

C$ 1,646

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Fri 3/4

7:25 p.m.-5:20 p.m.

2 stops20h 55m

Buenos Aires Jorge Newbery

Sat 25/4

1:30 p.m.-11:04 a.m.

2 stops22h 34m

C$ 1,649

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sun 1/3

2:15 p.m.-7:20 a.m.

2 stops39h 05m

C$ 544

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Fri 27/2

7:30 p.m.-7:20 a.m.

2 stops57h 50m

C$ 562

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Sun 15/3

5:40 a.m.-6:40 p.m.

3 stops36h 00m

C$ 565

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/1

Showing 1-10 of 17 results
1
2

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, December is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 596). Flying from Ottawa to Buenos Aires in March is currently the most expensive (average of C$ 1,087). 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 14 January 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
9,156 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,156 reviews
United Airlines
7.4
Good
9,156 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Air Canada
7.1
Good
10,619 reviews
United Airlines
7.4
Good
9,156 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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 Air Canada fly from Ottawa to Buenos Aires in about 19h 10m. 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$ 595. United Airlines is currently priced 56% 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, December is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 596). Flying from Ottawa to Buenos Aires in March is currently the most expensive (average of C$ 1,087). 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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See prices for flight routes from nearby airports that may be better suited for you.
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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 14 January 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 606AverageC$ 1,201FlexibilityNo 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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