In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

What is the cheapest time of day to fly from J0H to LHR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Johnson City to London Heathrow Airport as you normally would.

Can I find deals for flights from Johnson City to Heathrow that include hotel bookings?

Yes. In addition to deals on Johnson City to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Johnson City to Heathrow?

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

Can I find deals for business class flights from Johnson City to Heathrow?

Yes. Cheapflights offers flight deals from Johnson City to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Cheap Flights from Johnson City, TN to London Heathrow Airport

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Most accurate provider	Ovago 3 stars
Most trusted provider	Ovago 3 stars
Popular in	June
Cheapest in	January
Average price	$895

Provider with most accurate pricing for Blountville Tri Cities TN/VA-London (LON) flight deals.

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Provider most trusted by Cheapflights users for Blountville Tri Cities TN/VA-London (LON) flights.

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Highest demand for flights based on searches. 8% potential increase in price ($100 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Reviews of airlines servicing Heathrow

See what other customers who have flown with American Airlines from Johnson City to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.0

Good

12,210 reviews

Reviews

1 / 20

4.0

Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

American Airlines

7.0

Good

12,210 reviews

American Airlines

7.0

Good

12,210 reviews

Reviews

1 / 20

4.0

Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

Related info for your journey

Can I find deals for flights from Johnson City to Heathrow that include hotel bookings?
Yes. In addition to deals on Johnson City to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Johnson City to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Johnson City to Heathrow.
Can I find deals for business class flights from Johnson City to Heathrow?
Yes. Cheapflights offers flight deals from Johnson City to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 5 airlines flying from Johnson City to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$624	Average$1,105	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$646	Average$1,257	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$660	Average$1,096	FlexibilityNo cancel fee	On-time69%
British Airways	Cheapest$719	Average$986	FlexibilityNo cancel fee	On-time70%
Virgin Atlantic	Cheapest$731	Average$1,003	FlexibilityNo cancel fee	On-time72%

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Find cheap flights from Johnson City to Heathrow with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Johnson City to Heathrow

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Heathrow

See what other customers who have flown with American Airlines from Johnson City to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Can I find deals for flights from Johnson City to Heathrow that include hotel bookings?

How can I find direct flights from Johnson City to Heathrow?

Can I find deals for business class flights from Johnson City to Heathrow?

Traveling to a place near London Heathrow Airport?

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.

Alternative routes for Johnson City to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Heathrow by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Johnson City to Heathrow by cabin class

Find flights from Johnson City to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.

Johnson City and Heathrow flights

Browse other Johnson City and Heathrow flight options. Last updated on October 30, 2026.

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Cheap flights from Johnson City, TN, TN to Heathrow (LHR)

Find cheap flights from Johnson City to Heathrow with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Johnson City to Heathrow

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Heathrow

See what other customers who have flown with American Airlines from Johnson City to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Can I find deals for flights from Johnson City to Heathrow that include hotel bookings?

How can I find direct flights from Johnson City to Heathrow?

Can I find deals for business class flights from Johnson City to Heathrow?

Traveling to a place near London Heathrow Airport?

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.

Alternative routes for Johnson City to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Heathrow by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Johnson City to Heathrow by cabin class

Find flights from Johnson City to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.

Johnson City and Heathrow flights

Browse other Johnson City and Heathrow flight options. Last updated on October 30, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Johnson City to Heathrow flights

Consider these flights traveling from Johnson City to Heathrow.

Top 5 airlines flying from Johnson City to Heathrow

100% Free

Book with Flexibility

Travel Smart