Anonymous
Post 05/18/2026 11:37     Subject: Paris via LHR

Anonymous wrote:
Anonymous wrote:OP, why would it save you $4k? Have booked tickets like this before (into one airport, back out of another one in Europe) and the price was very similar to a roundtrip price.

But the earlier idea about flying from LHR is a good one, I'd probably do that, avoids just a lot of hassle of getting into London, doing the multiple changes, etc.

Then take Eurostar back to London.


I don’t have enough miles to fly in/out Paris. If I want to use miles I only can fly to and from London.



Which airline? If you needed another option, you could probably get the train to Brussels or Amsterdam and fly from there.
Anonymous
Post 05/18/2026 11:09     Subject: Paris via LHR

Anonymous wrote:OP, why would it save you $4k? Have booked tickets like this before (into one airport, back out of another one in Europe) and the price was very similar to a roundtrip price.

But the earlier idea about flying from LHR is a good one, I'd probably do that, avoids just a lot of hassle of getting into London, doing the multiple changes, etc.

Then take Eurostar back to London.


I don’t have enough miles to fly in/out Paris. If I want to use miles I only can fly to and from London.

Anonymous
Post 05/18/2026 11:06     Subject: Paris via LHR

Anonymous wrote:OP, why would it save you $4k? Have booked tickets like this before (into one airport, back out of another one in Europe) and the price was very similar to a roundtrip price.

But the earlier idea about flying from LHR is a good one, I'd probably do that, avoids just a lot of hassle of getting into London, doing the multiple changes, etc.

Then take Eurostar back to London.


I assume OP can get saver mileage tickets to/from London but none are currently available to/from Paris.
Anonymous
Post 05/18/2026 10:48     Subject: Paris via LHR

OP, why would it save you $4k? Have booked tickets like this before (into one airport, back out of another one in Europe) and the price was very similar to a roundtrip price.

But the earlier idea about flying from LHR is a good one, I'd probably do that, avoids just a lot of hassle of getting into London, doing the multiple changes, etc.

Then take Eurostar back to London.
Anonymous
Post 05/18/2026 10:40     Subject: Paris via LHR

Anonymous wrote:
Anonymous wrote:
Anonymous wrote:
Anonymous wrote:
Anonymous wrote:I’m planning 10 days in Paris and London. Originally was planning to fly into Paris and out of London.

Now I’m seeing I can fly for free if I stick to flying in and out of LHR.

Is flying into LHR and taking the Eurostar to Paris that same day really problematic? It would save me thousands of dollars.


It's very easy


I’m not sure I’d say very easy but certainly doable. You’ll have to clear customs/immigration 3 times that day - enter UK, exit UK, enter EU - as well as get from Heathrow to St Pancras Station for Eurostar. It’ll be a very long day with a long transfer but it’s doable.

I’d consider flying from Heathrow on a separate ticket, just leave plenty of time.

Or keep watching for mileage tickets out of Paris (sounds like you are using miles). Taxes are way way cheaper out of Paris.


I think they would only need to clear immigration twice as EU immigration is located in St Pancras before you bought the Eurostar.

The new EES scanning requirements are causing lots of issues and delays at European airports for travellers from outside the Schengen zone. Charles de Gaulle is apparently one of the worst. There are EES kiosks at St Pancras for the Eurostar. You might want to do a bit of online research into EES issues at different entry points.


Yeah you'd enter EU at St Pancras but you still have to enter UK. If I recall, it's just one after another but the lines can be rough and that was before the EES. It'll be more than just a half day of travel - you're going to have to allow some time and also plan enough of a layover for flight delays.


That should have said *exit* UK at St Pancras. And then enter EU at St Pancras too (nothing on the Paris side upon arrival). So your day would be:

Arrive LHR
Immigration and customs at LHR
Probably take Piccadilly line from LHR straight to St Pancras (1 hour)
Security at St Pancras
Exit UK at St Pancras
Enter EU at St Pancras
Eurostar (2.5 hours, 3.5 hours on the clock)
Arrive Gard du Nord
Eat croissants and baguettes

Realistically, assuming you land at LHR in the morning, I think you lose the day in further travel and get to Paris around dinner.
Anonymous
Post 05/18/2026 10:35     Subject: Paris via LHR

Anonymous wrote:
Anonymous wrote:
Anonymous wrote:
Anonymous wrote:I’m planning 10 days in Paris and London. Originally was planning to fly into Paris and out of London.

Now I’m seeing I can fly for free if I stick to flying in and out of LHR.

Is flying into LHR and taking the Eurostar to Paris that same day really problematic? It would save me thousands of dollars.


It's very easy


I’m not sure I’d say very easy but certainly doable. You’ll have to clear customs/immigration 3 times that day - enter UK, exit UK, enter EU - as well as get from Heathrow to St Pancras Station for Eurostar. It’ll be a very long day with a long transfer but it’s doable.

I’d consider flying from Heathrow on a separate ticket, just leave plenty of time.

Or keep watching for mileage tickets out of Paris (sounds like you are using miles). Taxes are way way cheaper out of Paris.


I think they would only need to clear immigration twice as EU immigration is located in St Pancras before you bought the Eurostar.

The new EES scanning requirements are causing lots of issues and delays at European airports for travellers from outside the Schengen zone. Charles de Gaulle is apparently one of the worst. There are EES kiosks at St Pancras for the Eurostar. You might want to do a bit of online research into EES issues at different entry points.


Yeah you'd enter EU at St Pancras but you still have to enter UK. If I recall, it's just one after another but the lines can be rough and that was before the EES. It'll be more than just a half day of travel - you're going to have to allow some time and also plan enough of a layover for flight delays.

I'd probably just flip your trip - stay in London upon arrival and then go to Paris later in the trip. Either fly straight out of Paris or take the train from Paris back to London early (very early) in the day and take a flight out of LHR towards the end of the day. There's a lot of opportunities here for delays or train strikes and I'd probably only really be comfortable doing it with a long layover or even an overnight, especially if this is travel with kids.
Anonymous
Post 05/18/2026 10:16     Subject: Paris via LHR

Anonymous wrote:I’m planning 10 days in Paris and London. Originally was planning to fly into Paris and out of London.

Now I’m seeing I can fly for free if I stick to flying in and out of LHR.

Is flying into LHR and taking the Eurostar to Paris that same day really problematic? It would save me thousands of dollars.


If you're flying Air France, you can take a free layover.
Anonymous
Post 05/18/2026 09:45     Subject: Paris via LHR

Anonymous wrote:
Anonymous wrote:
Anonymous wrote:I’m planning 10 days in Paris and London. Originally was planning to fly into Paris and out of London.

Now I’m seeing I can fly for free if I stick to flying in and out of LHR.

Is flying into LHR and taking the Eurostar to Paris that same day really problematic? It would save me thousands of dollars.


It's very easy


I’m not sure I’d say very easy but certainly doable. You’ll have to clear customs/immigration 3 times that day - enter UK, exit UK, enter EU - as well as get from Heathrow to St Pancras Station for Eurostar. It’ll be a very long day with a long transfer but it’s doable.

I’d consider flying from Heathrow on a separate ticket, just leave plenty of time.

Or keep watching for mileage tickets out of Paris (sounds like you are using miles). Taxes are way way cheaper out of Paris.


I think they would only need to clear immigration twice as EU immigration is located in St Pancras before you bought the Eurostar.

The new EES scanning requirements are causing lots of issues and delays at European airports for travellers from outside the Schengen zone. Charles de Gaulle is apparently one of the worst. There are EES kiosks at St Pancras for the Eurostar. You might want to do a bit of online research into EES issues at different entry points.
Anonymous
Post 05/18/2026 09:37     Subject: Re:Paris via LHR

Are you traveling alone?
Anonymous
Post 05/18/2026 09:18     Subject: Paris via LHR

Anonymous wrote:
Anonymous wrote:I’m planning 10 days in Paris and London. Originally was planning to fly into Paris and out of London.

Now I’m seeing I can fly for free if I stick to flying in and out of LHR.

Is flying into LHR and taking the Eurostar to Paris that same day really problematic? It would save me thousands of dollars.


It's very easy


I’m not sure I’d say very easy but certainly doable. You’ll have to clear customs/immigration 3 times that day - enter UK, exit UK, enter EU - as well as get from Heathrow to St Pancras Station for Eurostar. It’ll be a very long day with a long transfer but it’s doable.

I’d consider flying from Heathrow on a separate ticket, just leave plenty of time.

Or keep watching for mileage tickets out of Paris (sounds like you are using miles). Taxes are way way cheaper out of Paris.
Anonymous
Post 05/18/2026 09:09     Subject: Re:Paris via LHR

To save $4K, I would totally do it. And I would put that savings towards my next trip.
Anonymous
Post 05/18/2026 09:00     Subject: Paris via LHR

How much luggage do you have? Vueling has round trips LHR to ORY for like $150 if you don’t have a ton of baggage add ons. I like the Eurostar but a cheap 90 minute flight when you are already at the airport seems like a good option.
Anonymous
Post 05/18/2026 08:24     Subject: Paris via LHR

Anonymous wrote:
Anonymous wrote:I’m planning 10 days in Paris and London. Originally was planning to fly into Paris and out of London.

Now I’m seeing I can fly for free if I stick to flying in and out of LHR.

Is flying into LHR and taking the Eurostar to Paris that same day really problematic? It would save me thousands of dollars.


It's very easy


That’s what I’m wondering. I figure it will add 1/2 day of travel, but it will save me around $4k. Seems worth it.
Anonymous
Post 05/18/2026 08:20     Subject: Paris via LHR

Anonymous wrote:I’m planning 10 days in Paris and London. Originally was planning to fly into Paris and out of London.

Now I’m seeing I can fly for free if I stick to flying in and out of LHR.

Is flying into LHR and taking the Eurostar to Paris that same day really problematic? It would save me thousands of dollars.


It's very easy
Anonymous
Post 05/18/2026 08:14     Subject: Paris via LHR

I’m planning 10 days in Paris and London. Originally was planning to fly into Paris and out of London.

Now I’m seeing I can fly for free if I stick to flying in and out of LHR.

Is flying into LHR and taking the Eurostar to Paris that same day really problematic? It would save me thousands of dollars.