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Cheap flights from Ottawa to Buenos Aires from C$ 527

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 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — BUE
11 Jan — 18 Jan1
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 12 December 2025.

Wed 31/125:59 p.m.YOW - EZE
2 stops35h 21mUnited Airlines
Sat 28/211:55 p.m.EZE - YOW
2 stops18h 35mUnited Airlines
Deal found 9/12C$ 1,107
Sat 13/127:30 p.m.YOW - EZE
2 stops33h 50mUnited Airlines
Mon 5/110:05 p.m.EZE - YOW
2 stops22h 47mUnited Airlines
Deal found 10/12C$ 2,114
Wed 31/128:00 p.m.YOW - EZE
3 stops41h 10mMultiple Airlines
Fri 27/24:05 a.m.EZE - YOW
2 stops16h 33mMultiple Airlines
Deal found 9/12C$ 2,120
Wed 31/128:00 p.m.YOW - EZE
3 stops41h 10mAir Canada
Sat 28/24:45 p.m.EZE - YOW
3 stops23h 22mAir Canada
Deal found 11/12C$ 2,809
Sat 13/124:00 p.m.YOW - AEP
2 stops23h 20mAir Canada
Mon 5/11:40 p.m.AEP - YOW
2 stops26h 27mAir Canada
Deal found 10/12C$ 7,137
Sat 13/126:20 p.m.YOW - AEP
2 stops17h 40mMultiple Airlines
Mon 5/11:40 p.m.AEP - YOW
2 stops26h 27mMultiple Airlines
Deal found 11/12C$ 7,301

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 12 December 2025.

Round-trip from

C$ 1,059

One-way from

C$ 527

Popular in

December

Cheapest in

September

Average price

C$ 1,722
United Airlines
  • United Airlines
  • 9/2-16/2
  • 4 total stops
  • 59h 30m total
  • Ottawa to Buenos Aires
Search Deals
16/3
  • 16/3
  • 3 total stops
  • 51h 40m total
  • Ottawa to Buenos Aires
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 178 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 12 December 2025.
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

Wed 31/12

5:59 p.m.-7:20 a.m.

2 stops35h 21m

Buenos Aires Ministro Pistarini

Sat 28/2

11:55 p.m.-4:30 p.m.

2 stops18h 35m

C$ 1,107

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Tue 7/4

2:48 p.m.-8:00 a.m.

2 stops40h 12m

Buenos Aires Ministro Pistarini

Wed 22/4

9:00 p.m.-7:00 p.m.

2 stops23h 00m

C$ 1,124

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 28/1

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

2 stops21h 35m

Buenos Aires Ministro Pistarini

Tue 3/3

10:05 p.m.-4:30 p.m.

2 stops20h 25m

C$ 1,134

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Thu 8/1

7:27 p.m.-7:20 a.m.

2 stops33h 53m

Buenos Aires Ministro Pistarini

Thu 15/1

11:55 p.m.-2:27 p.m.

2 stops40h 32m

C$ 1,135

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 7/1

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

2 stops21h 35m

Buenos Aires Ministro Pistarini

Wed 14/1

10:05 p.m.-2:27 p.m.

2 stops42h 22m

C$ 1,212

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sun 4/1

7:27 p.m.-7:20 a.m.

2 stops33h 53m

Buenos Aires Ministro Pistarini

Fri 16/1

11:55 p.m.-2:27 p.m.

2 stops40h 32m

C$ 1,233

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sun 8/2

10:30 a.m.-7:20 a.m.

2 stops18h 50m

Buenos Aires Ministro Pistarini

Tue 24/2

10:05 p.m.-2:27 p.m.

2 stops18h 22m

C$ 1,241

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Thu 15/1

7:27 p.m.-7:20 a.m.

2 stops33h 53m

Buenos Aires Ministro Pistarini

Sun 15/3

9:05 p.m.-6:55 p.m.

2 stops46h 50m

C$ 1,318

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Tue 7/4

6:20 p.m.-12:10 a.m.

2 stops28h 50m

Buenos Aires Ministro Pistarini

Wed 22/4

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

1 stop19h 34m

C$ 1,339

OttawaBuenos Aires

YOW - AEP

YOWAEP

Ottawa

Thu 15/1

7:00 a.m.-8:40 p.m.

3 stops35h 40m

Buenos Aires Jorge Newbery

Sun 15/3

8:25 p.m.-6:38 p.m.

3 stops23h 13m

C$ 1,597

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 37 results
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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, December is the cheapest month in which you can book a flight from Ottawa to Buenos Aires (average of C$ 592). 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.

What is the cheapest time of day to fly from YOW to BUE?

Find hourly flight availability from Ottawa to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

One of the essential ways to save on airfare from Ottawa to Buenos Aires is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 38% on airfare.

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 12 December 2025.
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
9,095 reviews
Check prices

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

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
9,095 reviews
United Airlines
7.4
Good
9,095 reviews
Check prices

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

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
10,516 reviews
United Airlines
7.4
Good
9,095 reviews
Check prices

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

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 2 airlines. 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 35h 21m. 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 are the cheapest airlines flying from Ottawa to Buenos Aires round-trip?

    Cheapflights users have booked flights from Ottawa to Buenos Aires round-trip from C$ 602. Another airline that can offer you cheap pricing is Air Canada. 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$ 592). 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

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Top 2 airlines flying from Ottawa to Buenos Aires

Discover the top 2 airlines 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 1,027AverageC$ 1,255FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 1,097AverageC$ 1,304FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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