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Cheap flights from London Heathrow Airport to Iaşi from £81

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IAS
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Iasi are usually found in January or June, booked 43 days in advance, depart on a Wednesday or Sunday and return on a Wednesday

Cheap flight deals from Heathrow to Iaşi

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Iaşi (IAS). 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 13 June 2025.

Round-trip from

£172

One-way from

£81

Popular in

May

Cheapest in

January

Average price

£181
Austrian Airlines
  • Austrian Airlines
  • 21/9-25/9
  • 2 total stops
  • 35h 40m total
  • London to Iaşi
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6/9
  • 6/9
  • 1 total stop
  • 15h 20m total
  • London to Iaşi
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£8 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Find flight deals from Heathrow to Iaşi

Cheapest flights from Heathrow to Iaşi
Explore the most affordable flight options available from Heathrow to Iaşi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Wed 9/706:00LHR - IAS
1 stop7h 20mAustrian Airlines
Tue 22/716:00IAS - LHR
1 stop7h 40mAustrian Airlines
Deal found 10/6£144
Wed 9/706:00LHR - IAS
1 stop7h 20mMultiple Airlines
Tue 22/716:00IAS - LHR
2 stops6h 45mMultiple Airlines
Deal found 10/6£192
Thu 19/607:25LHR - IAS
2 stops15h 55mLufthansa
Fri 27/616:00IAS - LHR
2 stops27h 40mLufthansa
Deal found 10/6£250

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow to Iaşi 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 858,174 searches. Data last updated 13 June 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Iaşi that are best for you.

Fly from

Heathrow

Fly to

Iaşi

Route

Depart

Return

Price

LondonIaşi

LHR - IAS

LHRIAS

London Heathrow

Wed 9/7

06:00-15:20

1 stop7h 20m

Iasi

Tue 22/7

16:00-21:40

1 stop7h 40m

£144

LondonIaşi

LHR - IAS

LHRIAS

London Heathrow

Wed 9/7

06:00-15:20

1 stop7h 20m

Iasi

Tue 22/7

16:00-20:45

2 stops6h 45m

£192

LondonIaşi

LHR - IAS

LHRIAS

London Heathrow

Mon 1/9

20:25-01:20

2 stops26h 55m

Iasi

Sun 14/9

16:00-14:40

2 stops24h 40m

£251

LondonIaşi

LHR - IAS

LHRIAS

London Heathrow

Sat 6/9

19:00-12:20

1 stop15h 20m

£81

LondonIaşi

LHR - IAS

LHRIAS

London Heathrow

Wed 25/6

06:00-15:20

1 stop7h 20m

£134

LondonIaşi

LHR - IAS

LHRIAS

London Heathrow

Sat 6/9

20:25-01:20

2 stops26h 55m

£146

LondonIaşi

LHR - IAS

LHRIAS

London Heathrow

Mon 30/6

08:40-23:30

2 stops36h 50m

£292

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Best time to book a flight from Heathrow to Iaşi

Have a flexible travel schedule? Discover the best time to fly to Iaşi from Heathrow with our price prediction graph.
Estimated return 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 London Heathrow Airport to Iaşi

How far ahead should I book a flight from London Heathrow Airport to Iaşi?

Use this chart to determine the optimal time to book a return flight from Heathrow to Iaşi. Price data was last updated on 9 June 2025.

The price you pay for your flight from London Heathrow Airport to Iaşi may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London Heathrow Airport to Iaşi?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Iaşi (average of £69). Flying from London Heathrow Airport to Iaşi in December is currently the most expensive (average of £359). 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 LHR to IAS?

Find hourly flight availability from Heathrow to Iaşi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

One of the essential ways to save on airfare from London Heathrow Airport to Iaşi is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the evening could potentially save you up to 50% on airfare.

Rainfall in Iaşi by month

Plan your trip to Iaşi by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Iaşi ranges from 20.0 - 70.0 inches per month. June is typically the wettest month, when rainfall can reach 70.0 mm. January is typically the driest time to visit Iaşi when rainfall is around 20.0 mm.

Temperature in Iaşi by month

Plan your trip to Iaşi by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Iaşi, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -4.0 C).

Reviews of airlines servicing Iaşi

Get insights into the airlines that provide service to Iaşi. 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 Iaşi. Reviews last updated 13 June 2025.
To help decide which airline to fly from London to Iaşi, see what other customers have to say about KLM, Austrian Airlines and Air France. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Austrian Airlines
7.6
Good
802 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Air France
7.5
Good
1,463 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Lufthansa
6.8
Okay
7,139 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Iaşi. 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 into for flights to Iaşi from London Heathrow?

    If you book a flight to Iaşi from London Heathrow, you will be flying to Iasi, which is the city’s only airport. Iasi (IAS) is located 1.3 mi from the center of Iaşi. There are 0 flights from London Heathrow to Iasi per day from 3 different airlines.

  • What are the cheapest airlines flying from London Heathrow Airport to Iaşi round-trip?

    Currently priced at £172, Austrian Airlines will fly you from London Heathrow Airport to Iaşi and back. In addition to Austrian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and Air France - these airlines can fly you to your destination from £251 and £532, respectively. Users have found that Austrian Airlines is 31% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Iaşi one-way?

    £134 is the cheapest one-way deal found within the past few days, from Austrian Airlines. You may also be able to find cheap deals on Lufthansa and KLM, with prices starting from £146 and £288, respectively.

  • Can I find deals for flights from Heathrow to Iaşi that include hotel bookings?

    Yes. In addition to deals on Heathrow to Iaşi flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Iaşi?

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

  • Can I find deals for business class flights from Heathrow to Iaşi?

    Yes. Cheapflights offers flight deals from Heathrow to Iaşi 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 London Heathrow Airport to Iaşi?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Iaşi (average of £69). Flying from London Heathrow Airport to Iaşi in December is currently the most expensive (average of £359). 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 3 airlines flying from Heathrow to Iaşi

Discover the top 3 airlines that operate flights from Heathrow to Iaşi. 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 858,174 searches. Data last updated 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Wizz AirCheapest£90Average£240FlexibilityNo cancel feeOn-timeN/A
Search Wizz Air flights
Austrian AirlinesCheapest£137Average£298FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
TAROMCheapest£248Average£321FlexibilityNo cancel feeOn-time86%
Search TAROM flights

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How does Cheapflights help users find flights from Heathrow to Iaşi?

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Can Cheapflights find flights from Heathrow to Iaşi with no change fees?

Need flexible booking options for your flight to Iaşi from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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