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Same date exchange Eurostar St P UK to make TGV connection without losing booking fee

  • May 11, 2026
  • 3 replies
  • 34 views

Michele Hynes

I need an earlier Eurostar from St Pancras international, London, same day to make a connection TGV in Paris. I have been unable both through Eurostar and Eurrail site to find a space to exchange Eurostar to an earlier time of day. I see there is only 50 minutes between supposed arrival (if on time!) to make 14 subways stops on a Friday in  Paris, not to mention the distance between above ground platforms to the subway/metro. Will I lose the $60+ booking fee I already paid on the Eurrail site? Meanwhile, each day booking and rates are increasing. My Eurostar/Eurrail bookings both made on the Eurrail site with my 1st class Eurrail pass for May 29 (14 days. It is the last TGV of the day (only 2 daily go to Les Sables d’Olonne, my destination. I have 2 case files waiting for answers from each of Eurostar and Eurrail customer service. This is time consuming. Help - Au secours! Un grand merci - thanks for your anticipated advice and you tube links to practical info.

Best answer by Danhiel

@Michele Hynes 

It should be possible to make an exchange on the Eurostar site. I suggest to create an account. Sometimes Eurostar matches the mail addresses and you can see your bookings. Otherwise, select “Manage your bookings” and add your reservations with PNR and name.

 

3 replies

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  • Full steam ahead
  • Answer
  • May 11, 2026

@Michele Hynes 

It should be possible to make an exchange on the Eurostar site. I suggest to create an account. Sometimes Eurostar matches the mail addresses and you can see your bookings. Otherwise, select “Manage your bookings” and add your reservations with PNR and name.

 


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  • Railly clever
  • May 11, 2026

The rates for a Eurostar seat reservation are fixed, but they sell out before the train is fully booked. 


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  • Railmaster
  • May 11, 2026

Eurostar availability on 29 May looks like this:
 

Assuming you want to catch the direct TGV from Paris Montparnasse at 18:47 and now have a reservation for the Eurostar arriving at 17:57, you should be able to move your reservation to an earlier Eurostar, albeit in 2nd class only.

You could also stick with your booking, and use Eurostar's "Manage your booking” to move your seat as far to the front of the train as possible, since you'll then be closer to the exit. In addition, check how to get a ticket for the metro in advance, which is possible on your phone, or from the Eurostar bar.

I've done Paris Nord to Montparnasse in around 35 minutes platform to platform multiple times. Check seat61 to see how the Paris transfer works.

If you miss the TGV because of a delay on Eurostar, then SNCF should rebook you free of charge on the next possibility, departure 19:35 from Montparnasse.